IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.39.146.0 to 12.39.147.255 | 12.39.146.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.148.0 to 12.39.151.255 | 12.39.148.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.152.0 to 12.39.159.255 | 12.39.152.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.160.0 to 12.39.161.255 | 12.39.160.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.162.0 to 12.39.162.255 | 12.39.162.0/24 | AS13453 | DIVERSIFIED SYSTEMS RESOURCES LTD | See Range |
| 12.39.163.0 to 12.39.163.255 | 12.39.163.0/24 | AS13814 | RCB Bank | See Range |
| 12.39.164.0 to 12.39.167.255 | 12.39.164.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.168.0 to 12.39.168.255 | 12.39.168.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.169.0 to 12.39.169.255 | 12.39.169.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.39.170.0 to 12.39.171.255 | 12.39.170.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.172.0 to 12.39.175.255 | 12.39.172.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.176.0 to 12.39.191.255 | 12.39.176.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.192.0 to 12.39.195.255 | 12.39.192.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.196.0 to 12.39.197.255 | 12.39.196.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.198.0 to 12.39.199.255 | 12.39.198.0/23 | AS53768 | Laboratory Corporation of America | See Range |
| 12.39.200.0 to 12.39.207.255 | 12.39.200.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.208.0 to 12.39.223.255 | 12.39.208.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.39.224.0 to 12.39.255.255 | 12.39.224.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.40.0.0 to 12.40.31.255 | 12.40.0.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.40.32.0 to 12.40.39.255 | 12.40.32.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.40.40.0 to 12.40.43.255 | 12.40.40.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.40.44.0 to 12.40.44.255 | 12.40.44.0/24 | AS27195 | Epic Alliance Inc. | See Range |
| 12.40.45.0 to 12.40.45.255 | 12.40.45.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.40.46.0 to 12.40.47.255 | 12.40.46.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.40.48.0 to 12.40.48.255 | 12.40.48.0/24 | AS7018 | AT&T Services Inc. | See Range |
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