Data as of Nov 10, 2026
Autonomous system

AS11712

AT&T Services, Inc.

Announces 30,976 addresses in 6 prefixes. None of it is anonymizer space.

Type
Internet provider
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
72.157.240.0/21
since Jan 2026
ResidentialAT&T Enterprises, LLC
72.157.248.0/21
since Feb 2006
ResidentialAT&T Enterprises, LLC
139.76.8.0/21
since Jan 2006
Residential
139.76.53.0/24
since Mar 2008
Residential
139.76.64.0/18
since May 2005
Residential
139.76.224.0/19
since Jan 2006
Residential

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it