Tag: ATT DNS Outage

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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