IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.131.8.0 to 12.131.15.255 | 12.131.8.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.16.0 to 12.131.31.255 | 12.131.16.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.32.0 to 12.131.63.255 | 12.131.32.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.64.0 to 12.131.95.255 | 12.131.64.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.96.0 to 12.131.99.255 | 12.131.96.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.100.0 to 12.131.101.255 | 12.131.100.0/23 | AS53360 | Integral Solutions Group | See Range |
| 12.131.102.0 to 12.131.103.255 | 12.131.102.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.104.0 to 12.131.111.255 | 12.131.104.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.112.0 to 12.131.115.255 | 12.131.112.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.116.0 to 12.131.116.255 | 12.131.116.0/24 | AS27358 | Trustmark Insurance Co. | See Range |
| 12.131.117.0 to 12.131.117.255 | 12.131.117.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.118.0 to 12.131.119.255 | 12.131.118.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.120.0 to 12.131.120.255 | 12.131.120.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.121.0 to 12.131.121.255 | 12.131.121.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.131.122.0 to 12.131.123.255 | 12.131.122.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.124.0 to 12.131.127.255 | 12.131.124.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.128.0 to 12.131.128.255 | 12.131.128.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.129.0 to 12.131.129.255 | 12.131.129.0/24 | AS3423 | AT&T Corp. | See Range |
| 12.131.130.0 to 12.131.131.255 | 12.131.130.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.132.0 to 12.131.135.255 | 12.131.132.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.136.0 to 12.131.143.255 | 12.131.136.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.144.0 to 12.131.145.255 | 12.131.144.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.146.0 to 12.131.146.255 | 12.131.146.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.131.147.0 to 12.131.147.255 | 12.131.147.0/24 | AS4057 | Mechant.s Choice Payment Solutions | See Range |
| 12.131.148.0 to 12.131.148.255 | 12.131.148.0/24 | AS53396 | Strac | See Range |
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