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Kentik Network Analysis Center

Internet outage in New Zealand triggered by cyberattack response

September 03, 2021
New Zealand’s third largest telecom went offline for almost an hour earlier today reportly due to a cyberattack.

According to Kentik aggregate NetFlow data, internet traffic to and from Vocus NZ (AS9790) stopped at 1:20 UTC (1:20pm local) and didn’t begin to recover until 2:06 UTC. It wasn’t until 2:25 UTC (2:25pm local) before traffic levels had returned to normal.

According to Reuters, the outage occurred as a consequence of fending off a DDoS attack against one of its customers. Impact of the outage was also visible in the IODA measurement platform from CAIDA.


Doug Madory

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).

Twitter: @DougMadory

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