IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.173.42.0 to 12.173.43.255 | 12.173.42.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.44.0 to 12.173.47.255 | 12.173.44.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.48.0 to 12.173.51.255 | 12.173.48.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.52.0 to 12.173.53.255 | 12.173.52.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.54.0 to 12.173.54.255 | 12.173.54.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.55.0 to 12.173.55.255 | 12.173.55.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.173.56.0 to 12.173.56.255 | 12.173.56.0/24 | AS54959 | Lockheed Martin Corporation | See Range |
| 12.173.57.0 to 12.173.57.255 | 12.173.57.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.58.0 to 12.173.59.255 | 12.173.58.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.60.0 to 12.173.63.255 | 12.173.60.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.64.0 to 12.173.127.255 | 12.173.64.0/18 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.128.0 to 12.173.191.255 | 12.173.128.0/18 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.192.0 to 12.173.223.255 | 12.173.192.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.224.0 to 12.173.225.255 | 12.173.224.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.226.0 to 12.173.226.255 | 12.173.226.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.227.0 to 12.173.227.255 | 12.173.227.0/24 | AS46439 | City of Lexington | See Range |
| 12.173.228.0 to 12.173.231.255 | 12.173.228.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.232.0 to 12.173.239.255 | 12.173.232.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.240.0 to 12.173.243.255 | 12.173.240.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.244.0 to 12.173.244.255 | 12.173.244.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.245.0 to 12.173.245.255 | 12.173.245.0/24 | AS29708 | Assured Guaranty Corp | See Range |
| 12.173.246.0 to 12.173.247.255 | 12.173.246.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.173.248.0 to 12.173.255.255 | 12.173.248.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.174.0.0 to 12.174.31.255 | 12.174.0.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.174.32.0 to 12.174.47.255 | 12.174.32.0/20 | AS7018 | AT&T Services Inc. | See Range |
Page 601 of 22.832