All systems are operational

Stickied Incidents

Saturday 12th July 2025

Seattle Network Elevated latency to China

We're currently seeing significantly elevated latency and some packet loss to China from our Seattle network when routing outbound via AS4837. We suspect there is a fiber cut in China Unicom's US network in the San Jose area, this should be resolved soon.

Our CMIN2 network is unaffected apart from a small latency increase.

  • This was partially resolved at 10:18 UTC and fully resolved at 11:11 UTC.

  • It has been confirmed there is major fiber cuts in the San Jose area (where we connect to China Unicom), no current estimated fix time. We checked alternative routes but they all had higher packet loss, although lower latency. We will consider switching routes if this carries on for much longer.

    • Past Incidents

    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

    Tuesday 5th July 2022

    No incidents reported

    Monday 4th July 2022

    No incidents reported

    Sunday 3rd July 2022

    No incidents reported