IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.171.10.0 to 12.171.11.255 | 12.171.10.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.12.0 to 12.171.15.255 | 12.171.12.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.16.0 to 12.171.31.255 | 12.171.16.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.32.0 to 12.171.63.255 | 12.171.32.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.64.0 to 12.171.79.255 | 12.171.64.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.80.0 to 12.171.83.255 | 12.171.80.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.84.0 to 12.171.84.255 | 12.171.84.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.85.0 to 12.171.85.255 | 12.171.85.0/24 | AS40458 | CMFG Life Insurance Company | See Range |
| 12.171.86.0 to 12.171.87.255 | 12.171.86.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.88.0 to 12.171.89.255 | 12.171.88.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.90.0 to 12.171.90.255 | 12.171.90.0/24 | AS26694 | ADM Investor Services Inc | See Range |
| 12.171.91.0 to 12.171.91.255 | 12.171.91.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.92.0 to 12.171.93.255 | 12.171.92.0/23 | AS32787 | Akamai Technologies Inc. | See Range |
| 12.171.94.0 to 12.171.94.255 | 12.171.94.0/24 | AS7723 | Emergency 24 | See Range |
| 12.171.95.0 to 12.171.95.255 | 12.171.95.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.96.0 to 12.171.103.255 | 12.171.96.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.104.0 to 12.171.107.255 | 12.171.104.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.108.0 to 12.171.109.255 | 12.171.108.0/23 | AS2386 | AT&T Data Communications Services | See Range |
| 12.171.110.0 to 12.171.111.255 | 12.171.110.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.112.0 to 12.171.127.255 | 12.171.112.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.128.0 to 12.171.135.255 | 12.171.128.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.136.0 to 12.171.136.255 | 12.171.136.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.137.0 to 12.171.137.255 | 12.171.137.0/24 | AS26842 | Mfxchange US Inc | See Range |
| 12.171.138.0 to 12.171.139.255 | 12.171.138.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.171.140.0 to 12.171.143.255 | 12.171.140.0/22 | AS7018 | AT&T Services Inc. | See Range |
Page 597 of 22.832