On Feb. 13, 11:05 am CST a server hardware issue resulted in a gap in monitoring for approximately seven minutes (11:05 am CST – 11:12 am CST).
UltraDNS Outage: We are aware that some websites and reports may indicate an UltraDNS outage on January 28, 2013. We have verified that UltraDNS did have a short DNS issue. We will continue to monitor the situation, although it now appears to be resolved.
Starting at around 06:00 AM CST, July 23, 2012 Dotcom-Monitor began to detect a higher than usual number of DNS-related errors. The errors were sporadic and happening in bursts every couple of hours.
We are still looking for a root cause, but we believe issue started with a DDoS on Zerigo DNS services. We have a large number of our clients using Zerigo for their DNS hosting. Zerigo took their servers down due to the DDoS DNS this morning.
Dotcom-Monitor is researching internal and external systems for clarification regarding reported DNS and other issues. We will update with additional details today.
Aug 1, 2011 – Some Dotcom-Monitor clients may have experienced alerts due to a Level 3 Communications connectivity issue. For details see the statement below from Level 3 Communications explaining the event and the resolution.
“Much of the internet connectivity in and to the Continental United States was degraded by an outage within the Level 3 Communications backbone that began at approximately 17:22 1 August 2011 UTC. The impact of this event was felt not only on the Level3 backbone but also on other carriers as providers shifted large amounts of traffic that would have normally transited the Level3 network onto alternate network paths, causing increased latency and congestion and packet loss.”