AS797 AT&T Services, Inc.

AMERITECH-AS - AT&T Services, Inc. · registered in the United States

IPv4 addresses170,75221 prefixes · 0.005% of announced IPv4

Rank in United States#364largest network in US by IPv4 space, of 18,338 · 0.01% of US

Rank worldwide#1,207of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS797 in ASN lookup Look up an IP in this network (12.153.241.1) All networks in United States

IPv4 prefixes

All 21 prefixes, in address order.

12.153.241.0/24
67.98.173.0/24
135.209.64.0/18
135.209.146.0/23
135.209.148.0/22
135.209.152.0/22
135.209.156.0/24
135.209.158.0/23
135.209.160.0/21
135.209.168.0/24
135.209.208.0/23
135.209.210.0/23
135.209.212.0/22
135.209.216.0/21
135.209.224.0/20
144.160.0.0/15
170.35.208.0/20
170.35.224.0/20
192.150.169.0/24
198.180.219.0/24
204.107.19.0/24

Other ASNs named AT&T Services, Inc.

1 other network uses the same organisation name; together with AS797 they announce 201,728 IPv4 addresses.

ASNNameIPv4 addresses

AS11712BELLSOUTH - AT&T Services, Inc. US30,976

Similar-sized networks in United States

ASNNameIPv4 addresses

AS2900#361 WN-AZ-AS - Arizona Tri University Network172,800

AS5065#362 BUNNY-COMMUNICATIONS-GLOBAL - Bunny Communications172,032

AS11796#363 AIRSTREAMCOMM-NET - Airstream Communications, LLC171,264

AS2749#365 DNIC-AS-02749 - Navy Network Information Center (NNIC)169,984

AS19318#366 IS-AS-1 - Interserver, Inc169,728

AS36692#367 CISCO-UMBRELLA - Cisco OpenDNS, LLC169,728

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources