IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.239.140.0 to 12.239.143.255 | 12.239.140.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.144.0 to 12.239.159.255 | 12.239.144.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.160.0 to 12.239.191.255 | 12.239.160.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.192.0 to 12.239.207.255 | 12.239.192.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.208.0 to 12.239.211.255 | 12.239.208.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.212.0 to 12.239.212.255 | 12.239.212.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.213.0 to 12.239.213.255 | 12.239.213.0/24 | AS22040 | Linxus Internet | See Range |
| 12.239.214.0 to 12.239.215.255 | 12.239.214.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.216.0 to 12.239.223.255 | 12.239.216.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.239.224.0 to 12.239.255.255 | 12.239.224.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.240.0.0 to 12.247.255.255 | 12.240.0.0/13 | AS7018 | AT&T Services Inc. | See Range |
| 12.248.0.0 to 12.251.255.255 | 12.248.0.0/14 | AS7018 | AT&T Services Inc. | See Range |
| 12.252.0.0 to 12.252.255.255 | 12.252.0.0/16 | AS7018 | AT&T Services Inc. | See Range |
| 12.253.0.0 to 12.253.63.255 | 12.253.0.0/18 | AS8030 | AT&T WorldNet | See Range |
| 12.253.64.0 to 12.253.127.255 | 12.253.64.0/18 | AS7018 | AT&T Services Inc. | See Range |
| 12.253.128.0 to 12.253.255.255 | 12.253.128.0/17 | AS7018 | AT&T Services Inc. | See Range |
| 12.254.0.0 to 12.254.255.255 | 12.254.0.0/16 | AS7018 | AT&T Services Inc. | See Range |
| 12.255.0.0 to 12.255.63.255 | 12.255.0.0/18 | AS7018 | AT&T Services Inc. | See Range |
| 12.255.64.0 to 12.255.79.255 | 12.255.64.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.255.80.0 to 12.255.81.255 | 12.255.80.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.255.82.0 to 12.255.82.255 | 12.255.82.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.255.83.0 to 12.255.83.255 | 12.255.83.0/24 | AS4466 | AT&T Services Inc. | See Range |
| 12.255.84.0 to 12.255.87.255 | 12.255.84.0/22 | AS4466 | AT&T Services Inc. | See Range |
| 12.255.88.0 to 12.255.89.255 | 12.255.88.0/23 | AS4466 | AT&T Services Inc. | See Range |
| 12.255.90.0 to 12.255.91.255 | 12.255.90.0/23 | AS7018 | AT&T Services Inc. | See Range |
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