IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.172.144.0 to 12.172.159.255 | 12.172.144.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.160.0 to 12.172.163.255 | 12.172.160.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.164.0 to 12.172.167.255 | 12.172.164.0/22 | AS2386 | AT&T Data Communications Services | See Range |
| 12.172.168.0 to 12.172.175.255 | 12.172.168.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.176.0 to 12.172.177.255 | 12.172.176.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.178.0 to 12.172.179.255 | 12.172.178.0/23 | AS27288 | Digital Path | See Range |
| 12.172.180.0 to 12.172.183.255 | 12.172.180.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.184.0 to 12.172.191.255 | 12.172.184.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.192.0 to 12.172.192.255 | 12.172.192.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.193.0 to 12.172.193.255 | 12.172.193.0/24 | AS32352 | McGrath Rentcorp | See Range |
| 12.172.194.0 to 12.172.195.255 | 12.172.194.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.196.0 to 12.172.199.255 | 12.172.196.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.200.0 to 12.172.203.255 | 12.172.200.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.204.0 to 12.172.205.255 | 12.172.204.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.206.0 to 12.172.206.255 | 12.172.206.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.207.0 to 12.172.207.255 | 12.172.207.0/24 | AS36111 | BRINK.S INC. | See Range |
| 12.172.208.0 to 12.172.223.255 | 12.172.208.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.224.0 to 12.172.227.255 | 12.172.224.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.228.0 to 12.172.231.255 | 12.172.228.0/22 | AS27202 | City of Bardstown Kentucky | See Range |
| 12.172.232.0 to 12.172.239.255 | 12.172.232.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.172.240.0 to 12.172.255.255 | 12.172.240.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.0.0 to 12.173.31.255 | 12.173.0.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.32.0 to 12.173.39.255 | 12.173.32.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.40.0 to 12.173.40.255 | 12.173.40.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.41.0 to 12.173.41.255 | 12.173.41.0/24 | AS2386 | AT&T Data Communications Services | See Range |
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