Colt Autonomous System

Colt operates a single Autonomous System Number (AS8220) across the entire IP network. Most peers will receive full AS-COLT routes when meeting our peering policy.

Peers which don't meet the peering policy but where mutual advantage exists in a peering relationship Colt may treat such peers as regional peers in the local country in which that peer exists.

Some peers may receive only local country routes at certain locations where traffic balance is better achieved. For example Colt will only announce local country routes to content heavy peers to better balance inbound traffic towards Colt.

Technical Details

AS Number: 8220
Suggested Maximum Prefix: 2000
MD5 Password: Preferred if supported
NOC 24x7 phone: +44 (0)20 7390 7848
NOC 24x7 e-mail:
Policy e-mail: