Data as of Nov 6, 2026
Autonomous system

AS21969

Firstsource Advantage LLC

Announces 512 addresses in 2 prefixes. None of it is anonymizer space.

Type
Business
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
63.149.40.0/24
since May 2005
BusinessCenturyLink Communications, LLC
72.237.220.0/24
since Nov 2006
BusinessLevel 3 Parent, LLC

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it