Tag: DNS propagation

Stopping Black Friday Outages, Before They Start – Part 2 – DNS & HTML

The big day came and you had the high ground, your website was great, you even had some good, cheap monitoring in place, but oops…it turns out that monitoring was a little too cheap. It turns out your “hey, this is cheap” website monitoring service cached the Domain Name Server (DNS) process. You had a DNS issue and you didn’t know it …but your customers did.

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Hurricane Sandy hits NYC data centers, Datagram website servers down

Hurricane Sandy hits New York City, power shut off in lower Manhattan, websites without redundant servers go down. According to several news reports, websites for the United Nations, Buzzfeed, Gawker, Gizmodo, the Huffington Post, Daily Kos, Bloomberg news and Livestream went down. NYC-based Hosting and Internet Services Provider Datagram is among those affected.

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DNS Diagnostic: Update on the ATT DNS error

August 15, 2012-The ATT DNS outage demonstrates the importance of real-time root cause diagnostics when monitoring Internet services. Intermittent ATT DNS errors were first detected at 5:23 AM PST by Dotcom-Monitor a full hour before AT&T reported the issue. The Dotcom-Monitor Minnesota node noted the issue and captured a diagnostic DNS trace at the time of error. Non-clients of Dotcom-Monitor can use a free DNS trace tool here to test if their domain is affected by selecting Trace Style “DNS”.

This piece of info was sent immediately to Dotcom-Monitor clients whose services were affected by the ATT DNS outage. This diagnostic gave Dotcom-Monitor clients immediate info that pinpointed the root cause of the issue without the need for additional troubleshooting. Dotcom-Monitor clients using ATT DNS made extremely fast, informed decisions, such as moving their DNS to another provider, or taking alternative measures to re-route traffic.

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