{"id":7287,"date":"2026-05-30T13:30:40","date_gmt":"2026-05-30T13:30:40","guid":{"rendered":"https:\/\/dcmblogmulti.wpengine.com\/?p=7287"},"modified":"2026-05-31T20:27:25","modified_gmt":"2026-05-31T20:27:25","slug":"the-10-most-common-http-status-codes","status":"publish","type":"post","link":"https:\/\/www.dotcom-monitor.com\/blog\/the-10-most-common-http-status-codes\/","title":{"rendered":"The Most Common HTTP Status Codes (And What to Do About Each)"},"content":{"rendered":"
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The five HTTP status code categories and the codes you’ll actually see in production.<\/figcaption><\/figure>\n

Your pager fires at 2 a.m. The alert payload has a status code in it. What you do next depends almost entirely on which code you see.<\/p>\n

That’s the part most HTTP status code guides skip. They list definitions, sort the codes into five buckets, and stop. Useful as a glossary, less useful when a real endpoint is throwing 502s and an exec is asking why checkout is broken.<\/p>\n

This guide covers the same ten codes you’ll see most often, plus a few honorable mentions. For each one: what it means, what usually triggers it in production, and what to check first. The goal is to shorten the time between “I see the code” and “I know what to fix.”<\/p>\n

What Is an HTTP Status Code?<\/h2>\n

An HTTP status code is a three-digit number the server sends back with every response. It tells the client whether the request succeeded, failed, or needs to be redirected. You see them everywhere: in your browser’s DevTools Network tab, in load balancer logs, in monitoring alerts, in CDN dashboards. This guide focuses on the ones that actually wake people up.<\/p>\n

The Five Categories of HTTP Status Codes<\/h2>\n

The first digit of the code tells you the response class:<\/p>\n