Preventative Maintenance Takes Down Internet in Greenland
Internet service to the country of Greenland was down for almost three hours starting at 04:10 UTC (2:10am) when Tusass (formerly Tele Greenland, AS8818) was temporarily disconnected from the global internet.
The cause of the outage was a combination of the effects of preventative maintenance on the Tusass’s link to Canada and a fault on the connection to Denmark. The outage was also visible on the IODA outage tool.
According to a LinkedIn post, Tusass explained, “Fortunately, the fault on the connection to Denmark occurred on land, and therefore easy to repair.”
Doug Madory is the director of internet analysis for Kentik where he works on internet infrastructure analysis. The Washington Post dubbed him “The Man who can see the Internet” for his reputation in identifying significant developments in the global layout of the internet. Doug is regularly quoted by major news outlets about developments ranging from national blackouts to BGP hijacks to the activation of submarine cables. Prior to Kentik, he was the lead analyst for Oracle’s internet intelligence team (formerly Dyn Research and Renesys).
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