All systems are operational

Stickied Incidents

Saturday 28th June 2025

Seattle Network Increased latency for China

We're currently seeing increased latency to/from China for our Seattle network due to suspected fiber cuts on the US west coast, this appears to be heavily impacting China Unicom's network (AS4837) which has likely lost considerable capacity. CMIN2 should not see any impact apart from a temporary 20ms latency increase due to a re-route caused by the fiber cuts. This shouldn't take too long to be resolved.

  • The fiber cut was fixed at 4pm UTC and we can confirm everything is now looking normal.

  • Confirmed fiber cut, here is the explanation from our transport provider: There is a fiber cut between Vacaville, CA and Sacramento, CA. The fiber cut was caused by a car hitting a utility pole.

    It's likely that China Unicom is suffering capacity loss due to this same incident, there is no estimated fix time yet.

    • Past Incidents

    Tuesday 12th July 2022

    No incidents reported

    Monday 11th July 2022

    No incidents reported

    Sunday 10th July 2022

    No incidents reported

    Saturday 9th July 2022

    Seattle Network Degraded China network performance

    Our Seattle network is seeing degraded performance to/from China resulting in higher latency and packet loss due to China Unicom, who we use for our network to China (including Telecom, Unicom and Mobile), suffering backbone issues.

    The cause is a fiber cut in the APCN-2 submarine cable between Shanghai and Japan which China Unicom uses for a lot of their traffic. China Unicom is working to repair but has provided no estimated fix time yet.

  • Service appears to have returned to normal.

  • Performance appears to have degraded again as of at least 2am UTC 11th July, we're continuing to monitor.

  • Service has now returned to normal.

    • Friday 8th July 2022

    No incidents reported

    Thursday 7th July 2022

    No incidents reported

    Wednesday 6th July 2022

    No incidents reported