We are aware of a issue affecting connectivity to multiple networks within the UK. Initial testing had shown this to be a problem with Level3, however they are advising this to be part of a wider problem within the UK.
We are currently monitoring and will look at re-routing traffic if this continues, however this would involve shutting down several of our peers and affecting traffic via unaffected links. This would be a last resort option.
Once we know more we will advise.
UPDATE 01 – 11:11
Level3 have updated us to advise they are now tracking a global routing issue. This now seems to be isolated to Level3, however will be affecting any network that peer with Level3. Re-routing traffic is still be an option, however may have no impact to networks that rely on Level3.
UPDATE 02 – 11:36
Our network monitoring has alerted us to routing failures to common websites such as the BBC, Facebook & Google. We have taken the decision to shutdown our Level3 peering with Adapt. While this has had some positive impact, 3rd party networks that are using Level3 will still be having issues.
UPDATE 03 – 11:55
Level3 have advised that services are starting to be restored. We have re-enabled our Level3 peer via Adapt and have noticed they also took the decision to showdown there link to Level3. Traffic are currently routing via Cogent via Adapt.
UPDATE 04 – 20:00
Outage report from a 3rd party monitoring network: http://www.bgpmon.net/massive-route-leak-cause-internet-slowdown/