Data as of Nov 10, 2026
Autonomous system

AS22538

IBM

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

Type
Business
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
12.131.3.0/24
since Nov 2009
BusinessAT&T Enterprises, LLC
207.120.254.0/24
since Nov 2009
BusinessLevel 3 Parent, LLC

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it