Data as of Nov 5, 2026
Autonomous system

AS19599

Copyright Clearance Center

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

Type
Business
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
12.189.148.0/24
since Dec 2007
BusinessAT&T Enterprises, LLC
50.203.108.0/24
since Mar 2017
BusinessComcast Cable Communications, LLC

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it