AS4185

AT&T Corp.

AS 4185 ATTIS-ASN4185

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

201,472 IP addresses
ASN4185
NameATTIS-ASN4185
OrganizationAT&T Corp.
CountryUnited States  
RegistryARIN
IPv4 addresses201,472
IPv6 /64 networks1.63 x 220
Prefixes27
Other ASN allocated to AT&T Corp.
ASN Name IP addresses
6389 BELLSOUTH-NET-BLK 8,144,640
19957 TENNESSEE-NET 473,856
7287 PBI-NET-BLK2 217,856
4473 ATTIS-ASN4473 145,152
16967 SBCIDC-DLLSTX 81,152
5671 PBI-NET-BLK 12,800
6384 BELLSOUTH-NET-BLK 7,680
19483 SBCASI-AKRON-OH-COVLIL 7,424
5672 PBI-NET-BLK 6,400
6381 BELLSOUTH-NET-BLK 4,608
3423 ATTIS-ASN3423 3,328
6385 BELLSOUTH-NET-BLK 3,072
13965 SBCIS-FYTVAR 2,304
16959 SBIS-AMRLTX 2,304
6382 BELLSOUTH-NET-BLK 1,024
16961 HIPCS-DALLAS-SERVER-OFFICE 512
4186 ATTIS-ASN4186 256
13421 SBCIS-ABLNTX 0
13422 SBCIS-BUMTTX 0
13964 SBCIS-TPKAKS 0
19956 TENNESSEE-NET 0
14247 SBIS-WACOTX 0
16473 TNII 0
19496 SBCASI-AKRON-OH-COVLIL 0
16965 SBIS-SPFDMO 0
16962 HIPCS-IRVINE-ACCESS-OFFICE 0
16963 HIPCS-SOUTHFIELD-ACCESS-OFFICE 0
19495 SBCASI-AKRON-OH-COVLIL 0
19486 SBCASI-AKRON-OH-COVLIL 0
19485 SBCASI-AKRON-OH-COVLIL 0
16964 HIPCS-NEW-YORK-ACCESS-OFFICE 0
4990 ATTIS-ASN4990 0
16966 SBCIDC-LSAN03 0
13420 SBCIS-LUBKTX 0
11026 ATTIS-ASN11026 0
10774 SBIS-ASN-BLK-2 0
1698 PRODIGY 0
5107 ATTIS-ASN5107 0
5105 ATTIS-ASN5105 0
5104 ATTIS-ASN5104 0
5103 ATTIS-ASN5103 0
5102 ATTIS-ASN5102 0
5002 BBSATLGA 0
3422 ATTIS-ASN3422 0
3421 ATTIS-ASN3421 0
6383 BELLSOUTH-NET-BLK 0
7132 SBIS-AS 0
10772 SBIS-ASN-BLK-2 0
10771 SBIS-ASN-BLK-2 0
10770 SBIS-ASN-BLK-2 0
8063 BELLSOUTH-NET-BLK3 0
8061 BELLSOUTH-NET-BLK3 0
7891 BELLSOUTH-NET-BLK2 0
7294 SBIS-BLK 0
7286 PBI-NET-BLK2 0
7222 SBIS-KCSYMO 0
3420 ATTIS-ASN3420 0
IPv4 Prefixes for AS4185
Network Location Addresses
12.14.12.0/24 AT&T Services   Ashburn 256
12.14.14.0/24 AT&T Services   Washington D.C. (Northwest Washington) 256
12.150.176.0/24 AT&T Services   Washington D.C. (Southwest Washington) 256
12.150.186.0/24 AT&T Corp.   Washington D.C. 256
12.183.71.0/24 AT&T Services   Washington D.C. (Northwest Washington) 256
12.185.4.0/24 AT&T Services   Washington D.C. (Southwest Washington) 256
12.185.7.0/24 AT&T Services   Washington D.C. (Southwest Washington) 256
148.184.0.0/16 AT&T Corp.   Rockville 65,536
152.75.0.0/16 AT&T Corp.   Washington D.C. (Southwest Washington) 65,536
152.75.221.0/24 AT&T Corp.   Washington D.C. (Southwest Washington) 256
165.110.0.0/16 AT&T Corp.   Washington D.C. (Southwest Washington) 65,536
192.104.54.0/24 AT&T Corp.   Washington D.C. (Northeast Washington) 256
192.133.125.0/24 AT&T Corp.   Washington D.C. (Northeast Washington) 256
192.236.1.0/24 AT&T Corp.   Washington D.C. (Northwest Washington) 256
192.236.2.0/23 U.S. International Development Finance Corporation   Ashburn 512
192.236.4.0/22 AT&T Corp.   Washington D.C. (Northwest Washington) 1,024
192.236.8.0/24 AT&T Corp.   Washington D.C. (Northwest Washington) 256
198.137.240.0/24 AT&T Corp.   New York 256
IPv6 Prefixes for AS4185 - showing the first 7 of 9 networks
Network Location /64 Prefixes
2602:80a:e000::/44 AT&T Corp.   Washington D.C. (Northwest Washington) 220
2602:fbdc:8::/48 U.S. Agency International Development   New York 216
2620:0:610::/48 AT&T Corp.   Washington D.C. (Northeast Washington) 216
2620:0:6e0::/48 AT&T Corp.   Washington D.C. (Southwest Washington) 216
2620:0:900::/48 AT&T Corp.   Rockville 216
2620:10f:b000::/48 AT&T Corp.   New York 216
2620:10f:b070::/48 AT&T Corp.   New York 216