Exascale Outage History

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Exascale had 5 outages in the last 2 years totaling 634h 31m of downtime — averaging 0.2 incidents per month.

There were 5 Exascale outages since September 13, 2025 totaling 634h 31m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.exascale.co.uk

Minor August 16, 2026

Core Router Reload - pe0.lhr0.uk.as61049.net

Detected by Pingoru
Aug 16, 2026, 12:42 PM UTC
Resolved
Aug 16, 2026, 07:29 PM UTC
Duration
6h 47m
Affected: LHR0 - Telehouse North, London, UK
Timeline · 3 updates
  1. identified Aug 16, 2026, 12:42 PM UTC

    We have observed a core router reload in Telehouse North, while the majority of the network has continued to function any directly connected circuits to pe0.lhr0.uk.as61049.net will have been interrupted. We are raising a case with Cisco TAC.

  2. monitoring Aug 16, 2026, 12:56 PM UTC

    We are starting to see BGP sessions restore on pe0.lhr0.uk.as61049.net

  3. resolved Aug 16, 2026, 07:29 PM UTC

    We have seen stability for many hours. We are to schedule a future IOS XR upgrade to improve stability.

Read the full incident report →

Minor March 18, 2026

Elveated Loss on Link facing Aggrigation Router

Detected by Pingoru
Mar 18, 2026, 09:12 PM UTC
Resolved
Apr 13, 2026, 12:21 PM UTC
Duration
25d 15h
Affected: TEL0 - Exascale, Telford, UK
Timeline · 4 updates
  1. monitoring Mar 18, 2026, 09:12 PM UTC

    We have seen observed elevated optical loss and increased errors towards agg1, we have taken decisive action to replace the optical transceivers at both ends of the link to ensure service remains stable.

  2. monitoring Apr 13, 2026, 12:20 PM UTC

    We are continuing to monitor for any further issues.

  3. monitoring Apr 13, 2026, 12:21 PM UTC

    We are continuing to monitor for any further issues.

  4. resolved Apr 13, 2026, 12:21 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice February 26, 2026

Network outage

Detected by Pingoru
Feb 26, 2026, 10:43 AM UTC
Resolved
Feb 26, 2026, 10:00 AM UTC
Duration
—
Timeline · 1 update
  1. resolved Feb 26, 2026, 10:43 AM UTC

    An unexpected outage occurred in the data centre, impacting the network. This has since been resolved.

Read the full incident report →

Critical November 18, 2025

DDOS Protection Outage - Affecting public facing websites

Detected by Pingoru
Nov 18, 2025, 12:01 PM UTC
Resolved
Nov 18, 2025, 06:58 PM UTC
Duration
6h 57m
Affected: Website DDOS Protection
Timeline · 4 updates
  1. identified Nov 18, 2025, 11:53 AM UTC

    We are experiencing an outage with all websites and services protected by CloudFlare.

  2. identified Nov 18, 2025, 11:56 AM UTC

    We're starting to see websites recover. We await further updates from CloudFlare.

  3. identified Nov 18, 2025, 12:01 PM UTC

    Unfortunately we have seen services via CloudFlare revert to being offline. We await updates.

  4. resolved Dec 23, 2025, 06:58 PM UTC

    This incident has been resolved.

Read the full incident report →

Major September 13, 2025

Loss of Hypervisor in Telford

Detected by Pingoru
Sep 13, 2025, 04:42 PM UTC
Resolved
Sep 13, 2025, 10:19 PM UTC
Duration
5h 37m
Affected: TelfordWest BromwichTEL0 - Exascale, Telford, UK
Timeline · 6 updates
  1. identified Sep 13, 2025, 04:42 PM UTC

    The DNS servers in Telford have failed due to being hosted on the Hypervisor cluster which has failed. We recommend setting your DNS servers to 8.8.8.8 or 4.4.4.4 to restore service while we resolve the issue.

  2. identified Sep 13, 2025, 05:01 PM UTC

    We have introduced other DNS servers into the network, service should be starting to restore.

  3. identified Sep 13, 2025, 05:44 PM UTC

    We have restored the majority of services, however we are currently rebuilding the hypervisor to restore Radius which is affecting national broadband circuits delivered over Openreach.

  4. identified Sep 13, 2025, 05:44 PM UTC

    We are continuing to work on a fix for this issue.

  5. monitoring Sep 13, 2025, 08:28 PM UTC

    We have recovered all critical services and non-critical services will start to recover shortly.

  6. resolved Sep 13, 2025, 10:19 PM UTC

    All systems are now back to normal.

Read the full incident report →