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AS4185 AT&T Enterprises, LLC

ATTIS-ASN4185 - AT&T Enterprises, LLC · registered in the United States

IPv4 addresses131,32832 prefixes · 0.004% of announced IPv4
Rank in United States#495largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#1,532of 79,396 networks with IPv4
IPv618 x /483 prefixes
CountryUnited States18,679 ASNs registered there
Open AS4185 in ASN lookup Look up an IP in this network (12.14.12.1) All networks in United States

IPv4 prefixes

All 32 prefixes, in address order.

  • 12.14.12.0/24
  • 12.14.14.0/24
  • 12.150.176.0/24
  • 12.150.186.0/24
  • 12.183.71.0/24
  • 12.185.4.0/24
  • 12.185.7.0/24
  • 152.75.0.0/17
  • 152.75.130.0/23
  • 152.75.132.0/22
  • 152.75.136.0/21
  • 152.75.144.0/20
  • 152.75.160.0/19
  • 152.75.192.0/20
  • 152.75.208.0/21
  • 152.75.216.0/22
  • 152.75.220.0/23
  • 152.75.222.0/23
  • 152.75.224.0/20
  • 152.75.240.0/21
  • 152.75.248.0/23
  • 152.75.251.0/24
  • 152.75.255.0/24
  • 165.110.0.0/17
  • 165.110.128.0/18
  • 165.110.192.0/23
  • 165.110.196.0/22
  • 165.110.200.0/21
  • 165.110.208.0/20
  • 165.110.224.0/19
  • 192.104.54.0/24
  • 192.133.125.0/24

IPv6 prefixes

All 3 prefixes.

  • 2602:80a:e000::/44
  • 2620:0:610::/48
  • 2620:0:6e0::/48

Other ASNs named AT&T Enterprises, LLC

24 other networks use the same organisation name; together with AS4185 they announce 103,072,004 IPv4 addresses.

ASNNameIPv4 addresses
AS7018ATT-INTERNET4 - AT&T Enterprises, LLC US90,002,688
AS6389BELLSOUTH-NET-BLK - AT&T Enterprises, LLC US4,237,056
AS20057ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC US3,979,776
AS2686ATGS-MMD-AS - AT&T Enterprises, LLC US1,370,368
AS14654WAYPORT - AT&T Enterprises, LLC US916,480
AS2687ATGS-MMD-AS - AT&T Enterprises, LLC US727,040
AS7287PBI-NET-BLK2 - AT&T Enterprises, LLC US420,864
AS2688ATGS-MMD-AS - AT&T Enterprises, LLC US345,600
AS19957STATE-OF-TENNESSEE-NETTN - AT&T Enterprises, LLC US291,072
AS2386INS-AS - AT&T Enterprises, LLC US272,128
AS6431ATT-RESEARCH - AT&T Enterprises, LLC US200,192
AS2685ATGS-MMD-AS - AT&T Enterprises, LLC US94,464
AS25993ATT-LABS-AUSTIN-TX - AT&T Enterprises, LLC US44,288
AS4473ATTIS-ASN4473 - AT&T Enterprises, LLC US12,800
AS5671PBI-NET-BLK - AT&T Enterprises, LLC US8,448
AS5672PBI-NET-BLK - AT&T Enterprises, LLC US5,376
AS13965SBCIS-FYTVAR - AT&T Enterprises, LLC US4,096
AS3423ATTIS-ASN3423 - AT&T Enterprises, LLC US3,328
AS4468EASYLINK4 - AT&T Enterprises, LLC US1,536
AS6269ATT-INTERNET2 - AT&T Enterprises, LLC US1,280
AS7291SBIS-BLK - AT&T Enterprises, LLC US1,024
AS5728WORLDNET1 - AT&T Enterprises, LLC US512
AS4466EASYLINK2 - AT&T Enterprises, LLC US256
AS13979ATT-IPFR - AT&T Enterprises, LLC US4

Similar-sized networks in United States

ASNNameIPv4 addresses
AS20337#492 SUNYPOLY-ASN - SUNY Institute of Technology131,584
AS6106#493 UCR-EDU - University of California, Riverside131,334
AS53828#494 NITEL - NETWORK INNOVATIONS, LLC131,328
AS6200#496 UIC-AS - University of Illinois Chicago131,328
AS166#497 IDA-AS - Institute for Defense Analyses131,328
AS1563#498 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)131,328

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