{"id":32971,"date":"2026-02-26T02:37:24","date_gmt":"2026-02-26T02:37:24","guid":{"rendered":"https:\/\/www.dotcom-monitor.com\/blog\/best-ssl-certificate-monitoring-tools\/"},"modified":"2026-08-11T14:10:18","modified_gmt":"2026-08-11T14:10:18","slug":"best-ssl-certificate-monitoring-tools","status":"publish","type":"post","link":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/best-ssl-certificate-monitoring-tools\/","title":{"rendered":"2026\u5e74\u306e\u30d9\u30b9\u30c812 SSL\u8a3c\u660e\u66f8\u76e3\u8996\u30c4\u30fc\u30eb"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignright wp-image-32955\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/best-ssl-certificate-monitoring-tools.webp\" alt=\"Best SSL Certificate Monitoring Tools\" width=\"480\" height=\"320\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/best-ssl-certificate-monitoring-tools.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/best-ssl-certificate-monitoring-tools-300x200.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/best-ssl-certificate-monitoring-tools-1024x682.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/best-ssl-certificate-monitoring-tools-768x512.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\u671f\u9650\u5207\u308c\u307e\u305f\u306f\u8aa4\u8a2d\u5b9a\u3055\u308c\u305fSSL\/TLS\u8a3c\u660e\u66f8\u306f\u9759\u304b\u306b\u5931\u6557\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e6\u30fc\u30b6\u30fc\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u8b66\u544a\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3001\u30b3\u30f3\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u6e1b\u5c11\u3057\u3001\u30c1\u30fc\u30e0\u306f\u554f\u984c\u304c\u671f\u9650\u5207\u308c\u304b\u3001\u4e2d\u9593\u8a3c\u660e\u66f8\u306e\u6b20\u5982\u304b\u3001SNI\/\u30db\u30b9\u30c8\u540d\u306e\u4e0d\u4e00\u81f4\u304b\u3001CDN\u30a8\u30c3\u30b8\u304c\u53e4\u3044\u30c1\u30a7\u30fc\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u306e\u304b\u3092\u8a3a\u65ad\u3057\u3088\u3046\u3068\u614c\u3066\u307e\u3059\u3002\u3060\u304b\u3089\u3053\u305d\u30012026\u5e74\u306e<a href=\"https:\/\/www.dotcom-monitor.com\/learn\/glossary\/ssl-certificates\/\">SSL\u8a3c\u660e\u66f8\u76e3\u8996<\/a>\u306f\u300c\u6709\u52b9\u671f\u9650\u3092\u78ba\u8a8d\u3059\u308b\u300d\u4ee5\u4e0a\u306b\u3001<strong>\u7d99\u7d9a\u7684\u306a\u691c\u8a3c\uff0b\u8fc5\u901f\u306a\u30a2\u30e9\u30fc\u30c8\uff0b\u554f\u984c\u3092\u8fc5\u901f\u306b\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u5341\u5206\u306a\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8<\/strong>\u304c\u91cd\u8996\u3055\u308c\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u30012026\u5e74\u306e<strong>12\u306e\u6700\u9ad8\u306eSSL\u8a3c\u660e\u66f8\u76e3\u8996\u30c4\u30fc\u30eb<\/strong>\u3092\u6bd4\u8f03\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u30c4\u30fc\u30eb\u306e\u6a5f\u80fd\u3001\u4f7f\u7528\u611f\u3001\u9069\u5408\u7b87\u6240\u3001\u305d\u3057\u3066\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\u3002\uff08\u9577\u6240\u3068\u77ed\u6240\u306f\u7b87\u6761\u66f8\u304d\u306e\u307f\u3067\u3001\u305d\u308c\u4ee5\u5916\u306f\u30c6\u30ad\u30b9\u30c8\u3067\u3059\u3002\uff09<\/p>\n<h2 id='ssl\u8a3c\u660e\u66f8\u76e3\u8996\u3068\u306f'  id=\"boomdevs_1\">SSL\u8a3c\u660e\u66f8\u76e3\u8996\u3068\u306f\uff1f<\/h2>\n<p>SSL\u8a3c\u660e\u66f8\u76e3\u8996\u3068\u306f\u3001\u81ea\u8eab\u306eSSL\/TLS\u8a3c\u660e\u66f8\u306e\u6709\u52b9\u671f\u9650\u3001\u69cb\u6210\u30a8\u30e9\u30fc\u3001\u30c1\u30a7\u30fc\u30f3\u306e\u554f\u984c\u3001\u4e0d\u610f\u306e\u5909\u66f4\u3092\u7d99\u7d9a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u884c\u70ba\u3067\u3059\u3002\u4e00\u5ea6\u9650\u308a\u306e\u8a3c\u660e\u66f8\u30c1\u30a7\u30c3\u30ab\u30fc\u3068\u306f\u7570\u306a\u308a\u3001\u76e3\u8996\u30c4\u30fc\u30eb\u306f\u8907\u6570\u306e\u4e16\u754c\u4e2d\u306e\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u691c\u8a3c\u3092\u5b9f\u65bd\u3057\u3001\u554f\u984c\u304c\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u3059\u308b\u524d\u306b\u30c1\u30fc\u30e0\u306b\u901a\u77e5\u3057\u307e\u3059\u3002<\/p>\n<h2 id='ssl\u8a3c\u660e\u66f8\u76e3\u8996\u30c4\u30fc\u30eb\u306b\u6c42\u3081\u3089\u308c\u308b\u3082\u306e'  id=\"boomdevs_2\">SSL\u8a3c\u660e\u66f8\u76e3\u8996\u30c4\u30fc\u30eb\u306b\u6c42\u3081\u3089\u308c\u308b\u3082\u306e<\/h2>\n<p>\u591a\u304f\u306e\u4e0a\u4f4d\u6bd4\u8f03\u8a18\u4e8b\u306f\u4ee5\u4e0b\u306e\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3067\u4e00\u81f4\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u7a4d\u6975\u7684\u306a\u671f\u9650\u5207\u308c\u30a2\u30e9\u30fc\u30c8<\/strong>\uff0830\/14\/7\/1\u65e5\u306e\u8907\u6570\u306e\u30ea\u30de\u30a4\u30f3\u30c0\u671f\u9593\uff09<\/li>\n<li><strong>\u73fe\u5b9f\u306e\u969c\u5bb3\u306b\u5373\u3057\u305f\u691c\u8a3c<\/strong>\uff08\u7121\u52b9\u8a3c\u660e\u66f8\u3001\u30c1\u30a7\u30fc\u30f3\u554f\u984c\u3001\u8aa4\u3063\u305f\u8a3c\u660e\u66f8\u306e\u63d0\u4f9b\u7b49\uff09<\/li>\n<li><strong>\u8907\u6570\u306e\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089\u306e\u30c1\u30a7\u30c3\u30af<\/strong>\uff08\u7279\u306bCDN\u3084\u30b8\u30aa\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3044\u3066\u91cd\u8981\uff09<\/li>\n<li><strong>\u5b9f\u7528\u7684\u306a\u30a2\u30e9\u30fc\u30c8\u901a\u77e5<\/strong>\uff08\u30e1\u30fc\u30eb\uff0b\u30c1\u30e3\u30c3\u30c8\uff0b\u30a8\u30b9\u30ab\u30ec\u30fc\u30b7\u30e7\u30f3\u30aa\u30d7\u30b7\u30e7\u30f3\uff09<\/li>\n<li><strong>\u5c65\u6b74\u3068\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0<\/strong>\uff08\u76e3\u67fb\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5831\u544a\u3001\u4e8b\u5f8c\u30ec\u30d3\u30e5\u30fc\uff09<\/li>\n<li><strong>\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u5408\u3046\u3053\u3068<\/strong>\uff08\u7a3c\u50cd\u7387\u91cd\u8996\u30c4\u30fc\u30eb\u3001\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u91cd\u8996\u30c4\u30fc\u30eb\u3001\u8a3c\u660e\u66f8\u5c02\u7528\u30c4\u30fc\u30eb\u306a\u3069\uff09<\/li>\n<\/ul>\n<h2 id='\u30af\u30a4\u30c3\u30af\u6bd4\u8f03\u8868'  id=\"boomdevs_3\">\u30af\u30a4\u30c3\u30af\u6bd4\u8f03\u8868<\/h2>\n<p>\u7528\u9014\u5225\u306e\u7c21\u5358\u306a\u9069\u5408\u4f8b\uff1a<\/p>\n<ul>\n<li><strong>\u4f01\u696d\u5411\u3051\u306b\u6700\u9069\uff1a<\/strong>Datadog<\/li>\n<li><strong>\u5c0f\u898f\u6a21\u30c1\u30fc\u30e0\u5411\u3051\u306b\u6700\u9069\uff1a<\/strong>UptimeRobot<\/li>\n<li><strong>\u8a3c\u660e\u66f8\u30ac\u30d0\u30ca\u30f3\u30b9\u306b\u6700\u9069\uff1a<\/strong>TrackSSL<\/li>\n<li><strong>\u30b0\u30ed\u30fc\u30d0\u30eb\u76e3\u8996\u306b\u6700\u9069\uff1a<\/strong>Dotcom-Monitor<\/li>\n<li><strong>\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u6700\u9069\uff1a<\/strong>Better Stack<\/li>\n<\/ul>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td><strong>\u30c4\u30fc\u30eb<\/strong><\/td>\n<td><strong>\u5f97\u610f\u5206\u91ce<\/strong><\/td>\n<td><strong>SSL\u76e3\u8996\u306e\u7126\u70b9<\/strong><\/td>\n<td><strong>\u5831\u544a\/\u5c65\u6b74<\/strong><\/td>\n<td><strong>\u4f7f\u7528\u611f<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Dotcom-Monitor<\/strong><\/td>\n<td>\u30b0\u30ed\u30fc\u30d0\u30eb\u30c1\u30a7\u30c3\u30af\uff0b\u76e3\u67fb\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8<\/td>\n<td>SSL\uff0b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\/\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u76e3\u8996<\/td>\n<td>\u5f37\u529b<\/td>\n<td>\u76e3\u8996\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0<\/td>\n<\/tr>\n<tr>\n<td><strong>Better Stack<\/strong><\/td>\n<td>\u7a3c\u50cd\u7387\uff0b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/td>\n<td>\u7a3c\u50cd\u7387\/\u30ad\u30fc\u30ef\u30fc\u30c9\u76e3\u8996\u5185\u306eSSL<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u99c6\u52d5\u578b\u7a3c\u50cd\u7387<\/td>\n<\/tr>\n<tr>\n<td><strong>Sematext Synthetics<\/strong><\/td>\n<td>\u9ad8\u5ea6\u306a\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30afSSL\u691c\u8a3c<\/td>\n<td>\u30c1\u30a7\u30fc\u30f3\u8a8d\u8b58\u30c1\u30a7\u30c3\u30af\uff0b\u8a3a\u65ad<\/td>\n<td>\u5f37\u529b<\/td>\n<td>\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u7279\u5316\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af<\/td>\n<\/tr>\n<tr>\n<td><strong>Datadog Synthetics<\/strong><\/td>\n<td>\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u306e\u53ef\u89b3\u6e2c\u6027\uff0bSSL\u30c6\u30b9\u30c8<\/td>\n<td>Synthetics\u306b\u7d71\u5408\u3055\u308c\u305fSSL\u30c6\u30b9\u30c8<\/td>\n<td>\u5f37\u529b<\/td>\n<td>\u53ef\u89b3\u6e2c\u6027\u30b9\u30a4\u30fc\u30c8<\/td>\n<\/tr>\n<tr>\n<td><strong>Site24x7<\/strong><\/td>\n<td>\u30b9\u30a4\u30fc\u30c8\u76e3\u8996\uff0bSNI\u74b0\u5883<\/td>\n<td>SNI\uff0b\u5931\u52b9\/CA\u30c1\u30a7\u30c3\u30af<\/td>\n<td>\u5f37\u529b<\/td>\n<td>IT\u904b\u7528\u30b9\u30a4\u30fc\u30c8<\/td>\n<\/tr>\n<tr>\n<td><strong>UptimeRobot<\/strong><\/td>\n<td>\u7d20\u65e9\u3044\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\uff0b\u4e00\u822c\u7684\u306aSSL\u30a8\u30e9\u30fc<\/td>\n<td>\u6709\u52b9\u671f\u9650\uff0bSSL\u30a8\u30e9\u30fc\u30a2\u30e9\u30fc\u30c8<\/td>\n<td>\u57fa\u672c\u301c\u826f\u597d<\/td>\n<td>\u30b7\u30f3\u30d7\u30eb\u306a\u7a3c\u50cd\u7387\u30c4\u30fc\u30eb<\/td>\n<\/tr>\n<tr>\n<td><strong>StatusCake<\/strong><\/td>\n<td>\u30b7\u30f3\u30d7\u30eb\u306aSSL\u30c1\u30a7\u30c3\u30af<\/td>\n<td>\u6709\u52b9\u671f\u9650\u30a2\u30e9\u30fc\u30c8\uff0b\u53ef\u8996\u5316<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u7a3c\u50cd\u7387\u30d9\u30f3\u30c0\u30fc<\/td>\n<\/tr>\n<tr>\n<td><strong>Pingdom<\/strong><\/td>\n<td>HTTPS\u7a3c\u50cd\u7387\u30c1\u30a7\u30c3\u30af\u306b\u57cb\u3081\u8fbc\u307e\u308c\u305fSSL<\/td>\n<td>\u8a3c\u660e\u66f8\u30a8\u30e9\u30fc\uff0b\u671f\u9650\u5207\u308c\u3092\u7a3c\u50cd\u7387\u3067<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u30bb\u30c3\u30c8\uff06\u5fd8\u308c\u308b\u7a3c\u50cd\u7387<\/td>\n<\/tr>\n<tr>\n<td><strong>UpDown<\/strong><\/td>\n<td>\u30df\u30cb\u30de\u30ea\u30b9\u30c8\uff0b\u4e88\u6e2c\u53ef\u80fd\u306a\u30ea\u30de\u30a4\u30f3\u30c0\u30fc<\/td>\n<td>\u671f\u9650\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\uff0bWebhook<\/td>\n<td>\u57fa\u672c\u301c\u826f\u597d<\/td>\n<td>\u958b\u767a\u8005\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc<\/td>\n<\/tr>\n<tr>\n<td><strong>TrackSSL<\/strong><\/td>\n<td>\u8a3c\u660e\u66f8\u5c02\u7528\u76e3\u8996<\/td>\n<td>\u6709\u52b9\u671f\u9650\uff0b\u8a3c\u660e\u66f8\u5909\u66f4\u30a2\u30e9\u30fc\u30c8<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u8a3c\u660e\u66f8\u7279\u5316\u30c4\u30fc\u30eb<\/td>\n<\/tr>\n<tr>\n<td><strong>Oh Dear<\/strong><\/td>\n<td>\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u77e5\uff0b\u660e\u78ba\u306a\u901a\u77e5<\/td>\n<td>\u6709\u52b9\u671f\u9650\uff0b\u8a3c\u660e\u66f8\u5909\u66f4\u76e3\u8996<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u958b\u767a\u8005\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u76e3\u8996<\/td>\n<\/tr>\n<tr>\n<td><strong>Cert Spotter (SSLMate)<\/strong><\/td>\n<td>\u8a3c\u660e\u66f8\u900f\u660e\u6027\u76e3\u8996<\/td>\n<td>CT\u767a\u884c\u30a2\u30e9\u30fc\u30c8\uff0b\u671f\u9650\u5207\u308c\/\u7121\u52b9\u8a3c\u660e\u66f8\u30b7\u30b0\u30ca\u30eb<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7279\u5316CT\u76e3\u8996<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id='1-dotcom-monitor'  id=\"boomdevs_4\">1. Dotcom-Monitor<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/dotcom_monitor_ssl_monitoring.webp\"><img decoding=\"async\" class=\"alignright wp-image-32878\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/dotcom_monitor_ssl_monitoring.webp\" alt=\"Dotcom-Monitor SSL Monitoring\" width=\"480\" height=\"320\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/dotcom_monitor_ssl_monitoring.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/dotcom_monitor_ssl_monitoring-300x200.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/dotcom_monitor_ssl_monitoring-1024x682.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/dotcom_monitor_ssl_monitoring-768x511.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Dotcom-Monitor\u306f\u300c\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u306a<a href=\"https:\/\/www.dotcom-monitor.com\/ja\/%e3%83%a2%e3%83%8b%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e8%a3%bd%e5%93%81\/ssl-certificate-monitoring\/\">SSL\u8a3c\u660e\u66f8\u30c1\u30a7\u30c3\u30ab\u30fc<\/a>\u300d\u3068\u3057\u3066\u4f4d\u7f6e\u4ed8\u3051\u3089\u308c\u3066\u304a\u308a\u3001<strong>\u8907\u6570\u306e\u5834\u6240\u304b\u3089\u5b9a\u671f\u7684\u306b\u8a3c\u660e\u66f8\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u884c<\/strong>\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u30e6\u30fc\u30b6\u30fc\u304c\u4e16\u754c\u5404\u5730\u3067\u898b\u3066\u3044\u308bSSL\u306e\u72b6\u614b\u3092\u628a\u63e1\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30de\u30eb\u30c1\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30a2\u30d7\u30ed\u30fc\u30c1\u306f2026\u5e74\u306b\u91cd\u8981\u3067\u3042\u308a\u3001\u7279\u306bCDN\u3084\u30a8\u30c3\u30b8\u30ce\u30fc\u30c9\u304c\u53e4\u3044\u8a3c\u660e\u66f8\u30c1\u30a7\u30fc\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u5730\u57df\u9650\u5b9a\u3067\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u304b\u3089\u3067\u3059\u3002Dotcom-Monitor\u306f\u3001SSL\u76e3\u8996\u3092\u3088\u308a\u5e83\u3044\u4fe1\u983c\u6027\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u7d71\u5408\u3057\u3066\u304a\u308a\u3001\u8a3c\u660e\u66f8\u306e\u691c\u8a3c\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u308c\u306b\u4f9d\u5b58\u3059\u308b<strong>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3084\u4e3b\u8981\u306a\u30e6\u30fc\u30b6\u30fc\u30d5\u30ed\u30fc<\/strong>\u3082\u691c\u8a3c\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u8a3c\u660e\u66f8\u554f\u984c\u304c\u5b9f\u904b\u7528\u3067\u901a\u5e38\u3069\u306e\u3088\u3046\u306b\u73fe\u308c\u308b\u304b\u3092\u53cd\u6620\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3082\u3046\u4e00\u3064\u306e\u5dee\u5225\u5316\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u304c<strong>\u53ef\u8996\u6027\u3068\u8aac\u660e\u8cac\u4efb<\/strong>\u306b\u91cd\u70b9\u3092\u7f6e\u3044\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306bSSL\u304c\u6642\u9593\u3092\u901a\u3057\u3066\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u9593\u3067\u6709\u52b9\u3067\u3042\u3063\u305f\u3053\u3068\uff08\u307e\u305f\u306f\u66f4\u65b0\u304c\u884c\u308f\u308c\u305f\u3053\u3068\uff09\u3092\u793a\u3059\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u5c65\u6b74\u306f\u300c\u3042\u308c\u3070\u826f\u3044\u300d\u6a5f\u80fd\u3067\u306f\u306a\u304f\u3001\u771f\u306e\u6a5f\u80fd\u3068\u306a\u308a\u307e\u3059\u3002Dotcom-Monitor\u306f<a href=\"https:\/\/www.dotcom-monitor.com\/ja\/%e9%a1%94%e7%ab%8b%e3%81%a1\/%e7%89%b9%e5%be%b4%e7%9b%a3%e8%a6%96%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af\/\">\u7d0430\u7b87\u6240\u306e\u4e16\u754c\u7684\u306a\u76e3\u8996\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/a>\u3092\u5e83\u544a\u3057\u3001\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u652f\u63f4\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001<a href=\"https:\/\/www.dotcom-monitor.com\/blog\/ja\/ssl-certificate-management\/\">\u8a3c\u660e\u66f8\u7ba1\u7406\u30d7\u30ed\u30bb\u30b9<\/a>\u304c\u30c1\u30fc\u30e0\u9593\u3067\u5206\u6563\u3057\u3066\u3044\u308b\u5834\u5408\uff08\u30a6\u30a7\u30d6\u3001\u30a4\u30f3\u30d5\u30e9\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff09\u3001Dotcom-Monitor\u306e\u30a2\u30e9\u30fc\u30c8\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u3088\u308a\u300c\u8ab0\u304b\u304c\u66f4\u65b0\u3059\u3079\u304d\u300d\u3068\u3044\u3046\u66d6\u6627\u306a\u72b6\u614b\u3092\u6240\u6709\u3055\u308c\u308b\u904b\u7528\u30bf\u30b9\u30af\u306b\u5909\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u8907\u6570\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c1\u30a7\u30c3\u30af\u3067CDN\/\u30a8\u30c3\u30b8\u306e\u4e0d\u4e00\u81f4\u3092\u65e9\u671f\u767a\u898b<\/li>\n<li>SSL\u76e3\u8996\u306f\u7a3c\u50cd\u7387\u3068\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\/\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u76e3\u8996\u3068\u81ea\u7136\u306b\u7d71\u5408\u3055\u308c\u308b<\/li>\n<li>\u76e3\u67fb\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5831\u544a\u5411\u3051\u306e\u5f37\u529b\u306a\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0\/\u5c65\u6b74<\/li>\n<li>\u30b5\u30a4\u30c8\u3084\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306e\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u306b\u9069\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u57fa\u672c\u7684\u306a\u671f\u9650\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3060\u3051\u306a\u3089\u3070\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u304c\u904e\u5270\u304b\u3082\u3057\u308c\u306a\u3044<\/li>\n<li>SSL\u3060\u3051\u3067\u306a\u304f\u4ed6\u306e\u76e3\u8996\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u4f75\u7528\u3057\u305f\u65b9\u304c\u4fa1\u5024\u304c\u9ad8\u307e\u308b<\/li>\n<\/ul>\n<h2 id='2-better-stack'  id=\"boomdevs_5\">2. Better Stack<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/better_stack_ssl_certificate_monitoring.webp\"><img decoding=\"async\" class=\"alignright wp-image-32871\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/better_stack_ssl_certificate_monitoring.webp\" alt=\"Better Stack SSL Monitoring\" width=\"480\" height=\"285\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/better_stack_ssl_certificate_monitoring.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/better_stack_ssl_certificate_monitoring-300x178.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/better_stack_ssl_certificate_monitoring-1024x608.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/better_stack_ssl_certificate_monitoring-768x456.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Better Stack\u306eSSL\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u904b\u7528\u7684\u3067\u3001SSL\u8a3c\u660e\u66f8\u76e3\u8996\u306f<strong>\u7a3c\u50cd\u7387\u76e3\u8996\u3084\u30ad\u30fc\u30ef\u30fc\u30c9\u76e3\u8996\u306b\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059<\/strong>\u3002\u305d\u306e\u305f\u3081TLS\u969c\u5bb3\u306f\u53ef\u7528\u6027\u554f\u984c\u3068\u3057\u3066\u6271\u308f\u308c\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30d7\u30ed\u30bb\u30b9\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u307e\u3059\u3002\u5b9f\u969b\u3001TLS\u304c\u58ca\u308c\u308b\u3068\u30e6\u30fc\u30b6\u30fc\u8996\u70b9\u3067\u306f\u300c\u30b5\u30a4\u30c8\u30c0\u30a6\u30f3\u300d\u554f\u984c\u306b\u306a\u308b\u305f\u3081\u3001\u3053\u306e\u30e2\u30c7\u30eb\u306f\u591a\u304f\u306e\u5834\u5408\u9069\u5207\u3067\u3059\u3002Better Stack\u3067\u306f\u3001\u76e3\u8996\u306e\u9ad8\u5ea6\u8a2d\u5b9a\u304b\u3089\u8a3c\u660e\u66f8\u30c1\u30a7\u30c3\u30af\uff08\u6709\u52b9\u6027\u3068\u671f\u9650\u8ffd\u8de1\u3092\u542b\u3080\uff09\u3092\u6709\u52b9\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Better Stack\u304c\u8f1d\u304f\u306e\u306f\u3001\u691c\u51fa\u5f8c\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u90e8\u5206\u3067\u3001\u3053\u308c\u304c\u4e3b\u8981\u6bd4\u8f03\u3067\u9ad8\u8a55\u4fa1\u306a\u7406\u7531\u3067\u3059\u3002<a href=\"https:\/\/www.dotcom-monitor.com\/wiki\/knowledge-base\/getting-started-with-alerts\/\">\u30a2\u30e9\u30fc\u30c8\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5bfe\u5fdc\u304c\u5145\u5b9f\u3057\u3066\u304a\u308a\u3001\u8a3c\u660e\u66f8\u30a2\u30e9\u30fc\u30c8\u304c\u5fd8\u308c\u53bb\u3089\u308c\u305f\u53d7\u4fe1\u7bb1\u306b\u884c\u304f\u306e\u3067\u306f\u306a\u304f\u3001\u5b9f\u969b\u306b\u5bfe\u5fdc\u3059\u308b\u30c1\u30fc\u30e0\u306e\u5143\u306b\u5c4a\u304d\u307e\u3059\u3002SSL\u554f\u984c\u3082\u7a3c\u50cd\u505c\u6b62\u3068\u540c\u3058\u30a8\u30b9\u30ab\u30ec\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u306b\u5f93\u3046\u3053\u3068\u3092\u671b\u3080\u5834\u5408\u306b\u6700\u9069\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>SSL\u30c1\u30a7\u30c3\u30af\u306f\u7a3c\u50cd\u7387\/\u30ad\u30fc\u30ef\u30fc\u30c9\u76e3\u8996\u306b\u76f4\u63a5\u7d71\u5408\u3055\u308c\u3066\u3044\u308b<\/li>\n<li>\u5f37\u529b\u306a\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\uff1a\u8a3c\u660e\u66f8\u554f\u984c\u3078\u306e\u8fc5\u901f\u306a\u5bfe\u5fdc\u304c\u53ef\u80fd<\/li>\n<li>\u7c21\u5358\u306a\u69cb\u6210\uff08\u5404\u76e3\u8996\u3067SSL\/TLS\u691c\u8a3c\u306e\u30aa\u30f3\u30aa\u30d5\u5207\u308a\u66ff\u3048\uff09<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u8a3c\u660e\u66f8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30ac\u30d0\u30ca\u30f3\u30b9\uff08\u30a4\u30f3\u30d9\u30f3\u30c8\u30ea\u3001\u6240\u6709\u6a29\u3001\u5909\u66f4\u7ba1\u7406\uff09\u3078\u306e\u5bfe\u5fdc\u306f\u5f31\u3044<\/li>\n<li>\u8a3c\u660e\u66f8\u7279\u5316\u306e\u8a3a\u65ad\u306f\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u512a\u5148\u30c4\u30fc\u30eb\u306b\u6bd4\u3079\u4e2d\u5fc3\u7684\u3067\u306f\u306a\u3044<\/li>\n<\/ul>\n<h2 id='3-sematext-synthetics'  id=\"boomdevs_6\">3. Sematext Synthetics<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/sematext_synthetics_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32885\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/sematext_synthetics_ssl_certificate_monitoring.webp\" alt=\"Sematext Synthetics SSL Monitoring\" width=\"480\" height=\"190\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/sematext_synthetics_ssl_certificate_monitoring.webp 1254w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/sematext_synthetics_ssl_certificate_monitoring-300x119.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/sematext_synthetics_ssl_certificate_monitoring-1024x405.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/sematext_synthetics_ssl_certificate_monitoring-768x304.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Sematext\u306f<a href=\"https:\/\/www.dotcom-monitor.com\/blog\/synthetic-transaction-monitoring\/\">\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u76e3\u8996\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0<\/a>\u3067\u3001\u8a3c\u660e\u66f8\u30c1\u30a7\u30fc\u30f3\u5168\u4f53\uff08\u30ea\u30fc\u30d5\u3001\u4e2d\u9593\u3001\u30eb\u30fc\u30c8\uff09\u306b\u308f\u305f\u308bSSL\u8a3c\u660e\u66f8\u30c1\u30a7\u30c3\u30af\u3092\u660e\u793a\u7684\u306b\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5b9f\u969b\u306e\u969c\u5bb3\u306e\u591a\u304f\u304c\u30c1\u30a7\u30fc\u30f3\u554f\u984c\uff08\u671f\u9650\u5207\u308c\u4e2d\u9593\u8a3c\u660e\u66f8\u3001\u6b20\u5982\u3001\u4e2d\u9593\u9806\u5e8f\u306e\u8aa4\u308a\uff09\u306b\u8d77\u56e0\u3057\u3001\u305d\u308c\u3089\u306f\u300cSSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u5931\u6557\u300d\u3068\u3060\u3051\u5831\u544a\u3055\u308c\u308b\u30c4\u30fc\u30eb\u3067\u306f\u8a3a\u65ad\u304c\u96e3\u3057\u3044\u305f\u3081\u91cd\u8981\u3067\u3059\u3002Sematext\u306f\u69cb\u9020\u5316\u3055\u308c\u305fSSL\u30a2\u30e9\u30fc\u30c8\u30a6\u30a3\u30f3\u30c9\u30a6\uff08\u4f8b\uff1a\u671f\u9650\u5207\u308c\u524d\u306e\u65e5\u6570\u30a2\u30e9\u30fc\u30c8\uff09\u306b\u5bfe\u5fdc\u3057\u3001\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u51fa\u6642\u306b\u3082\u30a2\u30e9\u30fc\u30c8\u3092\u767a\u751f\u3055\u305b\u307e\u3059\u3002<\/p>\n<p>\u65e5\u5e38\u7684\u306b\u306f\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u76e3\u8996\u306e\u6587\u8108\u304c\u3042\u308b\u305f\u3081\u3001\u969c\u5bb3\u7b87\u6240\u3084\u5909\u66f4\u70b9\u3001\u969c\u5bb3\u958b\u59cb\u6642\u671f\u306a\u3069\u306e\u30c7\u30d0\u30c3\u30b0\u624b\u304c\u304b\u308a\u304c\u5f97\u3089\u308c\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u306b\u4eba\u6c17\u3067\u3059\u3002\u65e2\u306bSLA\u306e\u305f\u3081\u306bHTTP\/\u30d6\u30e9\u30a6\u30b6\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u65bd\u3057\u3066\u3044\u308b\u5834\u5408\u3001SSL\u691c\u8a3c\u306e\u8ffd\u52a0\u306f\u5225\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u5c0e\u5165\u305b\u305a\u306b\u30ab\u30d0\u30ec\u30c3\u30b8\u3092\u5e83\u3052\u308b\u4f4e\u6469\u64e6\u306a\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u30c1\u30a7\u30fc\u30f3\u8a8d\u8b58\u76e3\u8996\u306b\u3088\u308a\u300c\u4e0d\u610f\u306e\u4e2d\u9593\/\u30eb\u30fc\u30c8\u8a3c\u660e\u66f8\u671f\u9650\u5207\u308c\u300d\u4e8b\u6545\u3092\u6e1b\u5c11<\/li>\n<li>\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30afHTTP\/\u30d6\u30e9\u30a6\u30b6\u30c1\u30a7\u30c3\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u5f37\u529b\u306a\u8a3a\u65ad\u80fd\u529b<\/li>\n<li>\u6709\u52b9\u671f\u9650\u30a2\u30e9\u30fc\u30c8\u3068\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u51fa\u30a2\u30e9\u30fc\u30c8\u3092\u767a\u751f\u53ef\u80fd<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u30d6\u30e9\u30a6\u30b6\/\u30e6\u30fc\u30b6\u30fc\u30b8\u30e3\u30fc\u30cb\u30fc\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u306f\u6700\u521d\u306e\u30da\u30fc\u30b8\u306e\u307fSSL\u30c1\u30a7\u30c3\u30af\u304c\u884c\u308f\u308c\u308b\uff08\u91cd\u8981\u306a\u5236\u9650\uff09<\/li>\n<li>\u66f4\u65b0\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3060\u3051\u304c\u8981\u4ef6\u306a\u3089\u904e\u5270\u6027\u80fd<\/li>\n<\/ul>\n<h2 id='4-datadog-synthetics-ssl-tests'  id=\"boomdevs_7\">4. Datadog Synthetics (SSL tests)<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/datadog_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32892\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/datadog_ssl_certificate_monitoring.webp\" alt=\"Datadog SSL Monitoring\" width=\"480\" height=\"271\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/datadog_ssl_certificate_monitoring.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/datadog_ssl_certificate_monitoring-300x169.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/datadog_ssl_certificate_monitoring-1024x578.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/datadog_ssl_certificate_monitoring-768x434.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Datadog\u306eSSL\u30c6\u30b9\u30c8\u306f\u3001\u8a3c\u660e\u66f8\u306e<strong>\u6709\u52b9\u6027\u3068\u6709\u52b9\u671f\u9650<\/strong>\u3092\u7a4d\u6975\u7684\u306b\u76e3\u8996\u3057\u3001\u554f\u984c\u767a\u751f\u6642\u306f\u5931\u6557\u8a73\u7d30\u4ed8\u304d\u3067\u30a2\u30e9\u30fc\u30c8\u3092\u51fa\u3057\u3066\u539f\u56e0\u7279\u5b9a\u3092\u52a9\u3051\u307e\u3059\u3002Datadog\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u30c1\u30fc\u30e0\u306b\u3068\u3063\u3066\u6700\u5927\u306e\u5229\u70b9\u306f\u7d71\u5408\u3067\u3042\u308a\u3001SSL\u306e\u5065\u5168\u6027\u304c\u30e1\u30c8\u30ea\u30af\u30b9\u3001\u30ed\u30b0\u3001\u30c8\u30ec\u30fc\u30b9\u3001\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u7a3c\u50cd\u7387\u306e\u6a19\u6e96\u7684\u306a\u30b7\u30b0\u30ca\u30eb\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002\u5927\u898f\u6a21\u7d44\u7e54\u3067\u306f\u3053\u306e\u4e00\u8cab\u6027\u304c\u91cd\u8981\u3067\u3042\u308a\u3001\u5185\u90e8\u30b5\u30fc\u30d3\u30b9\u9593\u306e\u8a3c\u660e\u66f8\u554f\u984c\u3092\u4ed6\u306e\u4fe1\u983c\u6027\u554f\u984c\u3068\u540c\u3058\u3088\u3046\u306b\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001Datadog\u306fSynthetics\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ec\u30d9\u30eb\uff08SSL\u3001<a href=\"https:\/\/www.dotcom-monitor.com\/ja\/%e3%83%a2%e3%83%8b%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e8%a3%bd%e5%93%81\/dns%e7%9b%a3%e8%a6%96%e3%83%84%e3%83%bc%e3%83%ab-%e3%83%89%e3%83%83%e3%83%88%e3%82%b3%e3%83%a0%e3%83%a2%e3%83%8b%e3%82%bf%e3%83%bc\/\">DNS<\/a>\u306a\u3069\u3092\u542b\u3080\uff09\u3067\u306e\u591a\u5c64\u76e3\u8996\u3068\u4f4d\u7f6e\u4ed8\u3051\u3066\u304a\u308a\u3001\u8a3c\u660e\u66f8\u30c1\u30a7\u30c3\u30af\u3092\u5358\u767a\u306e\u30ea\u30de\u30a4\u30f3\u30c0\u30c4\u30fc\u30eb\u3067\u306f\u306a\u304f\u5e83\u7bc4\u306a\u30c6\u30b9\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e00\u90e8\u3068\u3057\u3066\u904b\u7528\u3057\u3084\u3059\u304f\u3057\u3066\u3044\u307e\u3059\u3002\u65e2\u5b58\u306e\u30bf\u30b0\u4ed8\u3051\u3001\u6240\u6709\u6a29\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30e2\u30c7\u30eb\u3092\u5f15\u304d\u7d99\u304e\u305f\u3044\u5834\u5408\u306f\u3001Datadog\u304c\u5f37\u529b\u306a\u9078\u629e\u80a2\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u3059\u3067\u306b\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u6295\u8cc7\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u524d\u63d0\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u3059\u3067\u306bDatadog\u3092\u5229\u7528\u4e2d\u306a\u3089\u5f37\u529b\u306b\u30d5\u30a3\u30c3\u30c8<\/li>\n<li>SSL\u30c6\u30b9\u30c8\u306f\u4f01\u696d\u5411\u3051\u306e\u30a2\u30e9\u30fc\u30c8\u3068\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u6574\u5408<\/li>\n<li>\u591a\u6570\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\uff08\u5185\u90e8\u30b5\u30fc\u30d3\u30b9\u542b\u3080\uff09\u306b\u30b9\u30b1\u30fc\u30eb\u53ef\u80fd<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>Datadog\u672a\u4f7f\u7528\u306a\u3089\u30b3\u30b9\u30c8\u30fb\u91cd\u91cf\u611f\u304c\u91cd\u3059\u304e\u308b\u3053\u3068\u3082<\/li>\n<li>\u5358\u4f53\u3067\u306f\u5c02\u7528\u306e\u8a3c\u660e\u66f8\u30ac\u30d0\u30ca\u30f3\u30b9\u30c4\u30fc\u30eb\u3067\u306f\u306a\u3044<\/li>\n<\/ul>\n<h2 id='5-site24x7'  id=\"boomdevs_8\">5. Site24x7<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/site24x7_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32899\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/site24x7_ssl_certificate_monitoring.webp\" alt=\"Site24x7\u2019s SSL\/TLS monitoring\" width=\"480\" height=\"316\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/site24x7_ssl_certificate_monitoring.webp 1094w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/site24x7_ssl_certificate_monitoring-300x197.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/site24x7_ssl_certificate_monitoring-1024x674.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/site24x7_ssl_certificate_monitoring-768x505.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Site24x7\u306eSSL\/TLS\u76e3\u8996\u306f\u3001\u7279\u306b<strong>SNI<\/strong>\uff08\u540c\u4e00IP\u3067\u8907\u6570\u8a3c\u660e\u66f8\uff09\u306b\u95a2\u3059\u308b\u73fe\u5b9f\u7684\u306a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u8907\u96d1\u6027\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u308a\u9b45\u529b\u7684\u3067\u3059\u3002Site24x7\u306f\u660e\u78ba\u306bSNI\u5bfe\u5fdc\u30b5\u30fc\u30d0\u30fc\u3092\u6319\u3052\u3001\u305d\u308c\u3089\u74b0\u5883\u3067\u6b63\u3057\u3044<a href=\"https:\/\/www.dotcom-monitor.com\/blog\/ja\/how-to-check-ssl-certificate-expiration-date\/\">SSL\u6709\u52b9\u671f\u9650\u60c5\u5831<\/a>\u3092\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u6027\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u8a3c\u660e\u66f8\u30e1\u30bf\u30c7\u30fc\u30bf\uff08CA\u3001\u6240\u6709\u8005\u3001\u767a\u884c\u65e5\u3001\u6709\u52b9\u671f\u9650\u3001\u6b8b\u65e5\u6570\uff09\u3082\u53d6\u5f97\u3057\u904b\u7528\u306e\u53ef\u8996\u6027\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u6709\u52b9\u671f\u9650\u306e\u4ed6\u3001Site24x7\u306f<strong>OCSP\u5931\u52b9\u30b9\u30c6\u30fc\u30bf\u30b9<\/strong>\u30c1\u30a7\u30c3\u30af\u3084CA\u306e\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u5165\u308a\u691c\u77e5\u3082\u30b5\u30dd\u30fc\u30c8\u3057\u3001\u300cSSL\u306e\u5065\u5168\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u885b\u751f\u300d\u3092\u76ee\u6307\u3057\u3066\u3044\u307e\u3059\u3002SSL\u76e3\u8996\u3092\u30b5\u30fc\u30d0\u30fc\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u542b\u3080IT\u904b\u7528\u306b\u30d5\u30a3\u30c3\u30c8\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001Site24x7\u306e\u30b9\u30a4\u30fc\u30c8\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u5f37\u307f\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u7c21\u6613\u30c4\u30fc\u30eb\u304c\u8aa4\u3063\u305f\u8a3c\u660e\u66f8\u3092\u691c\u51fa\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308bSNI\u74b0\u5883\u3067\u5f37\u529b<\/li>\n<li>OCSP\u5931\u52b9\u3084\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8CA\u691c\u77e5\u306a\u3069\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bc4\u308a\u306e\u30c1\u30a7\u30c3\u30af\u3092\u542b\u3080<\/li>\n<li>IT\u904b\u7528\u30b9\u30a4\u30fc\u30c8\u3068\u3057\u3066\u3046\u307e\u304f\u6a5f\u80fd<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>SSL\u76e3\u8996\u3060\u3051\u306a\u3089\u30b9\u30a4\u30fc\u30c8\u88fd\u54c1\u306f\u91cd\u304f\u611f\u3058\u308b\u304b\u3082<\/li>\n<li>\u30df\u30cb\u30de\u30ea\u30b9\u30c8\u30c4\u30fc\u30eb\u3088\u308a\u8a2d\u5b9a\u30fb\u7dad\u6301\u304c\u8907\u96d1<\/li>\n<\/ul>\n<h2 id='6-uptimerobot'  id=\"boomdevs_9\">6. UptimeRobot<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/uptimerobot_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32906\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/uptimerobot_ssl_certificate_monitoring.webp\" alt=\"UptimeRobot SSL Monitoring\" width=\"480\" height=\"222\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/uptimerobot_ssl_certificate_monitoring.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/uptimerobot_ssl_certificate_monitoring-300x139.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/uptimerobot_ssl_certificate_monitoring-1024x474.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/uptimerobot_ssl_certificate_monitoring-768x355.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>UptimeRobot\u306f\u30b7\u30f3\u30d7\u30eb\u3055\u3067\u4eba\u6c17\u304c\u3042\u308a\u3001HTTPS\u76e3\u8996\u3092\u8ffd\u52a0\u3057SSL\u76e3\u8996\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u8a3c\u660e\u66f8\u30a8\u30e9\u30fc\u3084\u6709\u52b9\u671f\u9650\u901a\u77e5\u3092\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3088\u308c\u3070\u3001\u671f\u9650\u30c1\u30a7\u30c3\u30af\u306f<strong>24\u6642\u9593\u3054\u3068\u306b1\u56de<\/strong>\u5b9f\u884c\u3055\u308c\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u306f<strong>30\u300114\u30017\u30010\u65e5<\/strong>\u306b\u8a2d\u5b9a\u3055\u308c\u3001\u9593\u9694\u306f\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u3067\u3059\u3002\u591a\u304f\u306e\u30c1\u30fc\u30e0\u306b\u3068\u3063\u3066\u3053\u308c\u306f\u6b63\u306b\u5fc5\u8981\u5341\u5206\u3067\u3042\u308a\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u8a3c\u660e\u66f8\u969c\u5bb3\uff08\u671f\u9650\u5207\u308c\uff09\u3092\u7c21\u5358\u306a\u8a2d\u5b9a\u3067\u9632\u3052\u307e\u3059\u3002<\/p>\n<p>UptimeRobot\u306f\u76e3\u8996\u30d5\u30ed\u30fc\u306b\u7d44\u307f\u8fbc\u307e\u308c\u305fSSL\u76e3\u8996\u3092\u58f2\u308a\u306b\u3057\u3066\u304a\u308a\u3001\u975e\u5c02\u9580\u5bb6\u3067\u3082\u7406\u89e3\u3057\u5bfe\u5fdc\u3057\u3084\u3059\u3044\u30c4\u30fc\u30eb\u3068\u3057\u3066\u91cd\u5b9d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u76e3\u8996\u306e\u7b2c\u4e00\u30ec\u30a4\u30e4\u30fc\u3068\u3057\u3066\u4f7f\u308f\u308c\u3001\u30c1\u30a7\u30fc\u30f3\u8a3a\u65ad\u3084\u30ac\u30d0\u30ca\u30f3\u30b9\u304c\u91cd\u8981\u306b\u306a\u308c\u3070\u5f8c\u304b\u3089\u6df1\u5800\u306e\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\/\u8a3c\u660e\u66f8\u30c4\u30fc\u30eb\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u304c\u975e\u5e38\u306b\u901f\u304fUI\u3082\u7c21\u5358<\/li>\n<li>\u5408\u7406\u7684\u306a\u30c7\u30d5\u30a9\u30eb\u30c8\u3068\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u306a\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u9593\u9694<\/li>\n<li>\u671f\u9650\u5207\u308c\u95a2\u9023\u969c\u5bb3\u306e\u300c\u7b2c\u4e00\u9632\u885b\u7dda\u300d\u3068\u3057\u3066\u52b9\u679c\u7684<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u671f\u9650\u5207\u308c\u30ea\u30b9\u30af\u306b\u306f\u5341\u5206\u3060\u304cTLS\u6df1\u5800\u691c\u8a3c\u306f\u4e0d\u5341\u5206<\/li>\n<li>\u8a3c\u660e\u66f8\u306e\u30ac\u30d0\u30ca\u30f3\u30b9\u6a5f\u80fd\uff08\u30a4\u30f3\u30d9\u30f3\u30c8\u30ea\u3001\u5909\u66f4\u7ba1\u7406\u3001\u76e3\u67fb\uff09\u306f\u9650\u5b9a\u7684<\/li>\n<\/ul>\n<h2 id='7-statuscake'  id=\"boomdevs_10\">7. StatusCake<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/statuscake_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32913\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/statuscake_ssl_certificate_monitoring.webp\" alt=\"StatusCake SSL Monitoring\" width=\"480\" height=\"322\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/statuscake_ssl_certificate_monitoring.webp 1048w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/statuscake_ssl_certificate_monitoring-300x202.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/statuscake_ssl_certificate_monitoring-1024x688.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/statuscake_ssl_certificate_monitoring-768x516.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>StatusCake\u306f\u66f4\u65b0\u671f\u9650\u3092\u5148\u53d6\u308a\u3057\u8a3c\u660e\u66f8\u306e\u65e5\u4ed8\u53ef\u8996\u5316\u3092\u91cd\u8996\u3057\u3066\u304a\u308a\u3001\u958b\u59cb\uff0f\u7d42\u4e86\u65e5\u3092\u78ba\u8a8d\u3067\u304d\u3001\u671f\u9650\u306e<strong>1\u300114\u300130\u65e5\u524d<\/strong>\u306b\u30a2\u30e9\u30fc\u30c8\u3092\u8a2d\u5b9a\u53ef\u80fd\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u8907\u6570\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30b5\u30a4\u30c8\u3084\u6a19\u6e96\u7684\u306a\u30a6\u30a7\u30d6\u8cc7\u7523\u3092\u7ba1\u7406\u3059\u308b\u30c1\u30fc\u30e0\u306b\u306f\u30af\u30ea\u30a2\u3067\u5b9f\u7528\u7684\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3042\u308a\u3001\u540c\u30d9\u30f3\u30c0\u30fc\u306e<a href=\"https:\/\/www.dotcom-monitor.com\/blog\/ja\/2023%e5%b9%b4%e3%81%ab%e3%82%a6%e3%82%a7%e3%83%96%e3%82%b5%e3%82%a4%e3%83%88%e3%81%ae%e7%a8%bc%e5%83%8d%e6%99%82%e9%96%93%e3%82%92%e7%9b%a3%e8%a6%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/\">\u7a3c\u50cd\u7387\u76e3\u8996<\/a>\u3068\u4f75\u7528\u3059\u308b\u306e\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>StatusCake\u306f\u300c\u4e2d\u9593\u5730\u5e2f\u300d\u306e\u30ab\u30c6\u30b4\u30ea\u30fc\u306b\u4f4d\u7f6e\u3057\u3001\u6975\u5c0f\u76e3\u8996\u3088\u308a\u69cb\u9020\u5316\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u306e\u4e3b\u306b\u7a3c\u50cd\u7387\u5229\u7528\u3092\u4e2d\u5fc3\u306b\u3057\u3066\u3044\u308b\u305f\u3081\u8a3c\u660e\u66f8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30ac\u30d0\u30ca\u30f3\u30b9\u306b\u306f\u5411\u3044\u3066\u3044\u307e\u305b\u3093\u3002\u4e3b\u306a\u30ea\u30b9\u30af\u304c\u300c\u66f4\u65b0\u6f0f\u308c\u300d\u3067\u3042\u308b\u5834\u5408\u306f\u826f\u597d\u306a\u9078\u629e\u80a2\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u308f\u304b\u308a\u3084\u3059\u3044\u671f\u9650\u5207\u308c\u8b66\u544a\u3068\u8a3c\u660e\u66f8\u65e5\u4ed8\u306e\u53ef\u8996\u5316<\/li>\n<li>\u4e00\u822c\u7684\u306a\u30a6\u30a7\u30d6\u76e3\u8996\u3068\u4f75\u7528\u3057\u3084\u3059\u3044<\/li>\n<li>\u30de\u30eb\u30c1\u30b5\u30a4\u30c8\u6240\u6709\u8005\u306b\u9069\u3057\u305f\u30b7\u30f3\u30d7\u30eb\u306a\u904b\u7528\u30e2\u30c7\u30eb<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u77e5\u3084\u9ad8\u5ea6\u306aTLS\u8a3a\u65ad\u306b\u306f\u7279\u5316\u3057\u3066\u3044\u306a\u3044<\/li>\n<li>\u6df1\u3044\u8a3c\u660e\u66f8\u30ac\u30d0\u30ca\u30f3\u30b9\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u7528\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u306a\u3044<\/li>\n<\/ul>\n<h2 id='8-pingdom'  id=\"boomdevs_11\">8. Pingdom<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/pingdom_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32920\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/pingdom_ssl_certificate_monitoring.webp\" alt=\"Pingdom\u2019s SSL certificate monitoring\" width=\"480\" height=\"261\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/pingdom_ssl_certificate_monitoring.webp 1110w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/pingdom_ssl_certificate_monitoring-300x163.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/pingdom_ssl_certificate_monitoring-1024x557.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/pingdom_ssl_certificate_monitoring-768x418.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Pingdom\u306eSSL\u8a3c\u660e\u66f8\u76e3\u8996\u306f\u6280\u8853\u7684\u306b\u306f\u3001\u7a3c\u50cd\u7387\u30c1\u30a7\u30c3\u30af\u306e\u8a2d\u5b9a\u6642\u306bHTTPS\u3092\u9078\u629e\u3059\u308b\u3068\u6709\u52b9\u306b\u306a\u308a\u307e\u3059\u3002Pingdom\u306fHTTPS\u30c1\u30a7\u30c3\u30af\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u81ea\u52d5\u7684\u306b\u8a3c\u660e\u66f8\u30a8\u30e9\u30fc\u3092\u76e3\u8996\u3057\u3001\u8a3c\u660e\u66f8\u306e\u554f\u984c\u3084\u6709\u52b9\u671f\u9650\u5207\u308c\u3092\u901a\u77e5\u3059\u308b\u3068\u3057\u3066\u3044\u307e\u3059\u3002SolarWinds Pingdom\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3082\u3053\u308c\u3092\u88cf\u4ed8\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u904b\u7528\u9762\u3067\u306f\u300c\u30bb\u30c3\u30c8\uff06\u5fd8\u308c\u300d\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u3042\u308a\u3001\u8a3c\u660e\u66f8\u969c\u5bb3\u304c\u7a3c\u50cd\u505c\u6b62\u969c\u5bb3\u3068\u306a\u308b\u305f\u3081\u3001\u30c1\u30fc\u30e0\u306e\u5bfe\u5fdc\u3059\u308b\u5834\u6240\u306b\u81ea\u7136\u306b\u73fe\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u300cTLS\u304c\u58ca\u308c\u3066\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308b\u306e\u3092\u9632\u304e\u305f\u3044\u300d\u3068\u3044\u3046\u8981\u4ef6\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u7279\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>HTTPS\u7a3c\u50cd\u7387\u30c1\u30a7\u30c3\u30af\u306b\u7d71\u5408\u3055\u308c\u305fSSL\u76e3\u8996\uff08\u8a2d\u5b9a\u304c\u7c21\u5358\uff09<\/li>\n<li>\u8a3c\u660e\u66f8\u30a8\u30e9\u30fc\u306f\u53ef\u7528\u6027\u554f\u984c\u3068\u3057\u3066\u8868\u51fa\u3057\u30c1\u30fc\u30e0\u306f\u512a\u5148\u5bfe\u5fdc<\/li>\n<li>\u65e2\u306bPingdom\u7a3c\u50cd\u7387\u30c1\u30a7\u30c3\u30af\u3092\u6a19\u6e96\u3068\u3057\u3066\u3044\u308b\u30c1\u30fc\u30e0\u306b\u597d\u9069<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u5c02\u7528\u8a3c\u660e\u66f8\u30c4\u30fc\u30eb\u307b\u3069\u306e\u53ef\u8996\u6027\u306f\u306a\u3044<\/li>\n<li>\u8a3c\u660e\u66f8\u5728\u5eab\u3001\u6240\u6709\u6a29\u7ba1\u7406\u3001\u5909\u66f4\u8ffd\u8de1\u306f\u5bfe\u8c61\u5916<\/li>\n<\/ul>\n<h2 id='9-updown'  id=\"boomdevs_12\">9. UpDown<a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/updown_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32927\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/updown_ssl_certificate_monitoring.webp\" alt=\"UpDown SSL Monitoring\" width=\"480\" height=\"158\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/updown_ssl_certificate_monitoring.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/updown_ssl_certificate_monitoring-300x99.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/updown_ssl_certificate_monitoring-1024x337.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/updown_ssl_certificate_monitoring-768x253.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/h2>\n<p>UpDown\u306f\u8efd\u91cf\u76e3\u8996\u30b5\u30fc\u30d3\u30b9\u3067\u3001\u4e88\u6e2c\u53ef\u80fd\u304b\u3064\u81ea\u52d5\u5316\u306b\u9069\u3057\u3066\u3044\u308b\u305f\u3081\u958b\u767a\u8005\u306b\u4eba\u6c17\u304c\u3042\u308a\u307e\u3059\u3002UpDown\u306eSSL\u671f\u9650\u901a\u77e5\u306f\u3001<strong>30\u300114\u30017\u30011\u65e5\u524d<\/strong>\u306b\u9001\u4fe1\u3055\u308c\u308b\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3067\u3042\u308b\u3068\u660e\u793a\u3055\u308c\u3066\u304a\u308a\u3001\u91cd\u8981\u306a\u8b66\u544a\u3067\u306f\u306a\u304f\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3068\u3057\u3066\u73fe\u5730\u6642\u9593\u306e\u5348\u524d10\u6642\u306b\u9001\u3089\u308c\u307e\u3059\u3002SSL\u671f\u9650\u30a4\u30d9\u30f3\u30c8\u7528\u306eWebhook\u3082\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u306f\u81ea\u52d5\u7684\u306b\u30c1\u30b1\u30c3\u30c8\u3092\u958b\u304f\u3001\u30c1\u30e3\u30c3\u30c8\u306b\u6295\u7a3f\u3059\u308b\u3001\u5185\u90e8\u306e\u30e9\u30f3\u30d6\u30c3\u30af\u3092\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u7528\u9014\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<p>UpDown\u30e2\u30c7\u30eb\u306f\u66f4\u65b0\u304c\u81ea\u52d5\u5316\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u305d\u306e\u81ea\u52d5\u5316\u304c\u6b63\u5e38\u306b\u6a5f\u80fd\u3057\u3066\u3044\u308b\u304b\u3092\u72ec\u7acb\u306b\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408\u306b\u6700\u9069\u3067\u3059\u3002\u901a\u77e5\u3092\u65e2\u5b58\u306e\u30c4\u30fc\u30eb\u306b\u7c21\u5358\u306b\u9023\u643a\u3067\u304d\u308b\u3053\u3068\u3082\u5f37\u307f\u3067\u3059\u3002\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u306f\u3001\u3088\u304f\u4f7f\u308f\u308c\u308b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u7d71\u5408\u3084Webhook\u306b\u9069\u3057\u305f\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u30c1\u30fc\u30e0\u304c\u8a08\u753b\u3092\u7acb\u3066\u3084\u3059\u3044\u4e88\u6e2c\u53ef\u80fd\u306a\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u9593\u9694<\/li>\n<li>Webhook\u306b\u3088\u308a\u66f4\u65b0\u306e\u30c1\u30b1\u30c3\u30c8\u3084\u30e9\u30f3\u30d6\u30c3\u30af\u3092\u81ea\u52d5\u5316\u3057\u3084\u3059\u3044<\/li>\n<li>\u591a\u304f\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u4f4e\u8ca0\u8377\u3067\u76e3\u8996\u53ef\u80fd<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u8a3c\u660e\u66f8\u30ac\u30d0\u30ca\u30f3\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\uff08\u6240\u6709\u6a29\u3001\u76e3\u67fb\u5831\u544a\u3001\u30dd\u30ea\u30b7\u30fc\uff09\u3067\u306f\u306a\u3044<\/li>\n<li>\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u512a\u5148\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u6bd4\u3079\u8a3a\u65ad\u306e\u6df1\u3055\u304c\u52a3\u308b<\/li>\n<\/ul>\n<h2 id='10-trackssl'  id=\"boomdevs_13\">10. TrackSSL<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/trackssl_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32934\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/trackssl_ssl_certificate_monitoring.webp\" alt=\"TrackSSL SSL Monitoring\" width=\"480\" height=\"258\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/trackssl_ssl_certificate_monitoring.webp 1280w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/trackssl_ssl_certificate_monitoring-300x161.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/trackssl_ssl_certificate_monitoring-1024x551.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/trackssl_ssl_certificate_monitoring-768x413.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>TrackSSL\u306f\u7a3c\u50cd\u7387\u91cd\u8996\u3067\u306f\u306a\u304f\u8a3c\u660e\u66f8\u7279\u5316\u578b\u3067\u30012026\u5e74\u3067\u306f\u81ea\u52d5\u66f4\u65b0\uff08ACME\u3001CDN\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\uff09\u304c\u666e\u53ca\u3057\u305f\u3053\u3068\u3067\u65b0\u305f\u306a\u30ea\u30b9\u30af\u3068\u306a\u308b<strong>\u4e88\u671f\u3057\u306a\u3044\u8a3c\u660e\u66f8\u5909\u66f4<\/strong>\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002TrackSSL\u306f\u8907\u6570\u306e\u30c1\u30e3\u30cd\u30eb\uff08\u30e1\u30fc\u30eb\u3001Slack\u3001SMS\u3001Teams\u3001Webhook\uff09\u3067\u671f\u9650\u901a\u77e5\u3092\u91cd\u8996\u3057\u3001\u300cSSL\u5909\u66f4\u76e3\u8996\u300d\u3084\u300cSSL\u8a3c\u660e\u66f8\u900f\u660e\u6027\u30a2\u30e9\u30fc\u30c8\u300d\u3082\u4e3b\u8981\u6a5f\u80fd\u3068\u3057\u3066\u5f37\u8abf\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u306fTrackSSL\u306f\u901a\u5e38\u3001\u7a3c\u50cd\u7387\u76e3\u8996\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u7a3c\u50cd\u7387\u30c4\u30fc\u30eb\u306f\u30b5\u30fc\u30d3\u30b9\u505c\u6b62\u3092\u77e5\u3089\u305b\u3001TrackSSL\u306f\u8a3c\u660e\u66f8\u306e\u5909\u66f4\u3001\u6709\u52b9\u671f\u9650\u63a5\u8fd1\u3001\u7570\u5e38\u3092\u76e3\u8996\u3057\u307e\u3059\u3002\u7d44\u7e54\u304c\u767a\u884c\u3092\u5b8c\u5168\u306b\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u5834\u5408\uff08\u4f8b\uff1aCDN\u304c\u8a3c\u660e\u66f8\u3092\u66f4\u65b0\u30fb\u914d\u5e03\u3059\u308b\u5834\u5408\uff09\u3001\u5909\u66f4\u30a2\u30e9\u30fc\u30c8\u306b\u3088\u3063\u3066\u8aa4\u3063\u305f\u8a3c\u660e\u66f8\u3084\u30c1\u30a7\u30fc\u30f3\u304c\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u914d\u4fe1\u3055\u308c\u305f\u5834\u5408\u306e\u691c\u51fa\u6642\u9593\u3092\u5927\u5e45\u306b\u77ed\u7e2e\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u4e00\u822c\u7a3c\u50cd\u7387\u3067\u306f\u306a\u304f\u8a3c\u660e\u66f8\u76e3\u8996\u306b\u7279\u5316<\/li>\n<li>\u81ea\u52d5\u66f4\u65b0\u74b0\u5883\u3067\u306e\u5909\u66f4\u76e3\u8996\u304c\u975e\u5e38\u306b\u6709\u7528<\/li>\n<li>\u591a\u69d8\u306a\u901a\u77e5\u30c1\u30e3\u30cd\u30eb(Slack\/Teams\/SMS\/webhook)\u306b\u5bfe\u5fdc<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>\u5b8c\u5168\u306a\u53ef\u7528\u6027\u30ab\u30d0\u30ec\u30c3\u30b8\u306b\u306f\u7a3c\u50cd\u7387\/\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u30c4\u30fc\u30eb\u3068\u4f75\u7528\u304c\u4e00\u822c\u7684<\/li>\n<li>\u300c\u5168\u76e3\u8996\u300d\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3068\u3057\u3066\u306f\u3084\u3084\u4e0d\u5411\u304d<\/li>\n<\/ul>\n<h2 id='11-oh-dear'  id=\"boomdevs_14\">11. Oh Dear<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/oh_dear_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32941\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/oh_dear_ssl_certificate_monitoring.webp\" alt=\"Oh Dear\u2019s SSL\/TLS monitoring\" width=\"480\" height=\"464\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/oh_dear_ssl_certificate_monitoring.webp 1096w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/oh_dear_ssl_certificate_monitoring-300x290.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/oh_dear_ssl_certificate_monitoring-1024x990.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/oh_dear_ssl_certificate_monitoring-768x743.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Oh Dear\u306eSSL\/TLS\u76e3\u8996\u306f\u300c\u8a3c\u660e\u66f8\u306f\u5909\u308f\u3063\u305f\u304b\uff1f\u300d\u3068\u3044\u3046\u554f\u3044\u3092\u300c\u6709\u52b9\u671f\u9650\u304c\u8fd1\u3044\u304b\uff1f\u300d\u3068\u540c\u3058\u304f\u3089\u3044\u91cd\u8996\u3059\u308b\u30c1\u30fc\u30e0\u5411\u3051\u3067\u3059\u3002\u6a19\u6e96\u7684\u306a\u671f\u9650\u8ffd\u8de1\u306b\u52a0\u3048\u3001\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u51fa\u3092\u30d3\u30d5\u30a9\u30fc\uff0f\u30a2\u30d5\u30bf\u30fc\u3067\u6bd4\u8f03\u53ef\u80fd\u306b\u3057\u3066\u304a\u308a\u3001\u66f4\u65b0\u3084\u914d\u5099\u5909\u66f4\u304c\u60f3\u5b9a\u5185\u304b\u3069\u3046\u304b\u8fc5\u901f\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306fCDN\u3001\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3001\u7ba1\u7406\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u8a3c\u660e\u66f8\u304c\u81ea\u52d5\u56de\u8ee2\u3055\u308c\u308b2026\u5e74\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u7279\u306b\u6709\u7528\u3067\u3001\u969c\u5bb3\u306e\u539f\u56e0\u306f\u671f\u9650\u5207\u308c\u3060\u3051\u3067\u306a\u304f\u8aa4\u3063\u305f\u8a3c\u660e\u66f8\u3084\u30c1\u30a7\u30fc\u30f3\u304c\u914d\u5099\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3082\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u904b\u7528\u9762\u3067\u306f\u8efd\u91cf\u3067\u8aad\u307f\u3084\u3059\u304f\u3001\u958b\u767a\u8005\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u7d71\u5408\u3055\u308c\u305f\u76e3\u8996\u3092\u5b9f\u73fe\u3057\u3066\u304a\u308a\u3001\u5f37\u529b\u306a\u901a\u77e5\u3092\u5b9f\u73fe\u3057\u3064\u3064SSL\u76e3\u8996\u3092\u8907\u96d1\u306a\u30ac\u30d0\u30ca\u30f3\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u3057\u307e\u305b\u3093\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>\u660e\u78ba\u306a\u30d3\u30d5\u30a9\u30fc\/\u30a2\u30d5\u30bf\u30fc\u306b\u3088\u308b\u5f37\u529b\u306a\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u51fa<\/li>\n<li>\u958b\u767a\u8005\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u76e3\u8996\u4f53\u9a13\u3068\u901a\u77e5<\/li>\n<li>\u81ea\u52d5\u5316\u74b0\u5883\u3067\u306e\u4e88\u671f\u305b\u306c\u8a3c\u660e\u66f8\u4ea4\u63db\u30a4\u30d9\u30f3\u30c8\u691c\u77e5\u306b\u6709\u52b9<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/ja\/ssl-certificate-management\/\">\u8a3c\u660e\u66f8\u7ba1\u7406\/\u30ac\u30d0\u30ca\u30f3\u30b9<\/a>\u30b7\u30b9\u30c6\u30e0\u3068\u3057\u3066\u306f\u4e0d\u5b8c\u5168<\/li>\n<li>\u53ef\u7528\u6027\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u305f\u3081\u306b\u7a3c\u50cd\u7387\/\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u30c4\u30fc\u30eb\u3068\u306e\u4f75\u7528\u304c\u30d9\u30b9\u30c8<\/li>\n<\/ul>\n<h2 id='12-cert-spotter-sslmate'  id=\"boomdevs_15\">12. Cert Spotter (SSLMate)<\/h2>\n<p><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/cert_spotter_ssl_certificate_monitoring.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-32948\" src=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/cert_spotter_ssl_certificate_monitoring.webp\" alt=\"Cert Spotter SSL Monitoring\" width=\"480\" height=\"262\" srcset=\"https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/cert_spotter_ssl_certificate_monitoring.webp 1168w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/cert_spotter_ssl_certificate_monitoring-300x164.webp 300w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/cert_spotter_ssl_certificate_monitoring-1024x559.webp 1024w, https:\/\/www.dotcom-monitor.com\/blog\/wp-content\/uploads\/sites\/3\/2026\/02\/cert_spotter_ssl_certificate_monitoring-768x420.webp 768w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>Cert Spotter\u306f\u8a3c\u660e\u66f8\u900f\u660e\u6027\uff08CT\uff09\u76e3\u8996\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u304c\u73fe\u5728\u63d0\u4f9b\u3057\u3066\u3044\u308b\u8a3c\u660e\u66f8\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001CT\u30ed\u30b0\u3092\u76e3\u8996\u3057\u3001\u81ea\u8eab\u306e\u30c9\u30e1\u30a4\u30f3\u7528\u306b\u8a3c\u660e\u66f8\u304c\u767a\u884c\u3055\u308c\u308b\u3068\u30a2\u30e9\u30fc\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e0d\u6b63\u306a\u767a\u884c\u3001\u4e88\u60f3\u5916\u306e\u66f4\u65b0\u3001\u8a08\u753b\u5916\u306e\u8a3c\u660e\u66f8\u6d3b\u52d5\u3092\u691c\u51fa\u53ef\u80fd\u3067\u3059\u3002\u3053\u308c\u306f\u671f\u9650\u5207\u308c\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3060\u3051\u3067\u306f\u306a\u3044\u30012026\u5e74\u306b\u5897\u3059\u4fa1\u5024\u306e\u3042\u308b\u8996\u70b9\u3067\u3059\u3002<\/p>\n<p>Cert Spotter\u306fSSLMate\u304c\u63d0\u4f9b\u3059\u308b\u30db\u30b9\u30c6\u30c3\u30c9\u30b5\u30fc\u30d3\u30b9\u3068\u3057\u3066\u3082\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u7248\u3068\u3057\u3066\u3082\u5b58\u5728\u3057\u3001CT\u76e3\u8996\u3092\u671b\u3080\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30c1\u30fc\u30e0\u306b\u3068\u3063\u3066\u67d4\u8edf\u306a\u5c55\u958b\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u9b45\u529b\u3067\u3059\u3002<\/p>\n<p><strong style=\"color: green\">\u9577\u6240<\/strong><\/p>\n<ul>\n<li>CT\u30ed\u30b0\u7d4c\u7531\u3067\u306e\u4e0d\u6b63\u307e\u305f\u306f\u4e88\u671f\u3057\u306a\u3044\u8a3c\u660e\u66f8\u767a\u884c\u691c\u51fa\u306b\u975e\u5e38\u306b\u512a\u308c\u308b<\/li>\n<li>\u7a3c\u50cd\u7387\/SSL\u30c1\u30a7\u30c3\u30af\u30c4\u30fc\u30eb\u3092\u88dc\u5b8c\u3057\u300c\u767a\u884c\u30a4\u30d9\u30f3\u30c8\u300d\u30ec\u30a4\u30e4\u30fc\u3092\u30ab\u30d0\u30fc<\/li>\n<li>\u30db\u30b9\u30c6\u30c3\u30c9\u30b5\u30fc\u30d3\u30b9\u3068\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30c4\u30fc\u30eb\u306e\u4e21\u65b9\u304c\u5229\u7528\u53ef\u80fd<\/li>\n<\/ul>\n<p><strong style=\"color: darkred\">\u77ed\u6240<\/strong><\/p>\n<ul>\n<li>CT\u76e3\u8996\u306f\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\/\u30c1\u30a7\u30fc\u30f3\u691c\u8a3c\u306e\u4ee3\u66ff\u3067\u306f\u306a\u3044<\/li>\n<li>\u53ef\u7528\u6027\u76ee\u7684\u306e\u30de\u30eb\u30c1\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30c1\u30a7\u30c3\u30af\u306f\u5f31\u3044<\/li>\n<\/ul>\n<h2 id='\u9069\u5207\u306a\u30c4\u30fc\u30eb\u306e\u9078\u3073\u65b9'  id=\"boomdevs_16\">\u9069\u5207\u306a\u30c4\u30fc\u30eb\u306e\u9078\u3073\u65b9<\/h2>\n<p>\u5b9f\u7528\u7684\u306a\u5224\u65ad\u57fa\u6e96\u3068\u3057\u3066\uff1a<\/p>\n<ul>\n<li><strong>\u76e3\u8996\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0<\/strong>\u3092\u9078\u3076\u3068\u304d\u306f\u3001SSL\u30c1\u30a7\u30c3\u30af\u3092\u5e83\u7bc4\u306a\u7a3c\u50cd\u7387\u30fb\u30e6\u30fc\u30b6\u30fc\u30d5\u30ed\u30fc\u76e3\u8996\u3001\u3055\u3089\u306b<a href=\"https:\/\/www.dotcom-monitor.com\/ja\/%e9%a1%94%e7%ab%8b%e3%81%a1\/%e6%a9%9f%e8%83%bd-%e3%83%ac%e3%83%9d%e3%83%bc%e3%83%88\/\">\u30ec\u30dd\u30fc\u30c8<\/a>\u3084\u30b0\u30ed\u30fc\u30d0\u30eb\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u306e\u4e00\u90e8\u3068\u3057\u3066\u7d44\u307f\u8fbc\u307f\u305f\u3044\u5834\u5408\uff08\u4f8b\uff1aDotcom-Monitor\uff09\u3002<\/li>\n<li><strong>\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u99c6\u52d5\u578b\u7a3c\u50cd\u7387\u30c4\u30fc\u30eb<\/strong>\u3092\u9078\u3076\u3068\u304d\u306f\u3001SSL\u969c\u5bb3\u3092\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u306e\u3088\u3046\u306b\u30da\u30fc\u30b8\u30f3\u30b0\u3057\u305f\u3044\u5834\u5408\uff08\u4f8b\uff1aBetter Stack\u3001Pingdom\u3001UptimeRobot\uff09\u3002<\/li>\n<li><a href=\"https:\/\/www.dotcom-monitor.com\/blog\/ja\/what-is-synthetic-monitoring\/\"><strong>\u30b7\u30f3\u30bb\u30c6\u30a3\u30c3\u30af\u512a\u5148\u30c4\u30fc\u30eb<\/strong><\/a>\u3092\u9078\u3076\u3068\u304d\u306f\u3001\u30c1\u30a7\u30fc\u30f3\u554f\u984c\u3084\u30c7\u30d0\u30c3\u30b0\u6587\u8108\u304c\u91cd\u8981\u306a\u5834\u5408\uff08\u4f8b\uff1aSematext\u3001Datadog\uff09\u3002<\/li>\n<\/ul>\n<p>\u8a3c\u660e\u66f8\u5909\u66f4\u691c\u77e5\u3084CT\u30bf\u30a4\u30d7\u76e3\u8996\u304c\u91cd\u8981\u306a\u3089\u3001<strong>\u8a3c\u660e\u66f8\u7279\u5316\u30c4\u30fc\u30eb<\/strong>\u3092\u9078\u3073\u307e\u3057\u3087\u3046\uff08\u4f8b\uff1aTrackSSL\uff09\u3002<\/p>\n<h2 id='\u307e\u3068\u3081'  id=\"boomdevs_17\">\u307e\u3068\u3081<\/h2>\n<p>2026\u5e74\u306e\u6700\u9ad8\u306e<a href=\"https:\/\/www.dotcom-monitor.com\/ja\/%e3%83%a2%e3%83%8b%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e8%a3%bd%e5%93%81\/ssl-certificate-monitoring\/\">SSL\u8a3c\u660e\u66f8\u76e3\u8996\u30c4\u30fc\u30eb<\/a>\u306f\u3001\u5358\u306a\u308b\u671f\u9650\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u3067\u306f\u306a\u304f\u3001\u30ea\u30a2\u30eb\u30e6\u30fc\u30b6\u30fc\u304c\u4f53\u9a13\u3059\u308b\u3088\u3046\u306b\u8a3c\u660e\u66f8\u306e\u5065\u5168\u6027\u3092\u691c\u8a3c\u3057\u3001\u9069\u5207\u306a\u30a2\u30e9\u30fc\u30c8\u3092\u9069\u5207\u306a\u30c1\u30fc\u30e0\u306b\u8fc5\u901f\u306b\u5c4a\u3051\u307e\u3059\u3002<strong>\u30de\u30eb\u30c1\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3SSL\u691c\u8a3c\u3001\u30a2\u30e9\u30fc\u30c8\u3001\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0<\/strong>\u3092\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304a\u3088\u3073<a href=\"https:\/\/www.dotcom-monitor.com\/blog\/ja\/web-transaction-monitoring-guide\/\">\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u76e3\u8996<\/a>\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u671b\u3080\u306a\u3089\u3001Dotcom-Monitor\u306f\u975e\u5e38\u306b\u512a\u308c\u305f\u9078\u629e\u80a2\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u52b9\u671f\u9650\u5207\u308c\u306eSSL\u8a3c\u660e\u66f8\u3067\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5931\u308f\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u30022026\u5e74\u306e\u4e3b\u8981\u306aSSL\u76e3\u8996\u30c4\u30fc\u30eb\u3092\u6bd4\u8f03\u3057\u3001\u6a5f\u80fd\u3001\u30a2\u30e9\u30fc\u30c8\u3001\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u3066\u6700\u9069\u306a\u3082\u306e\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"author":39,"featured_media":32959,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6027],"tags":[],"class_list":["post-32971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-6027"],"_links":{"self":[{"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/posts\/32971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/comments?post=32971"}],"version-history":[{"count":0,"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/posts\/32971\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/media\/32959"}],"wp:attachment":[{"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/media?parent=32971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/categories?post=32971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dotcom-monitor.com\/blog\/ja\/wp-json\/wp\/v2\/tags?post=32971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}