IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.204.128.0 to 12.204.159.255 | 12.204.128.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.160.0 to 12.204.161.255 | 12.204.160.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.162.0 to 12.204.162.255 | 12.204.162.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.163.0 to 12.204.163.255 | 12.204.163.0/24 | AS36173 | KINETIC CONCEPTS INC. | See Range |
| 12.204.164.0 to 12.204.167.255 | 12.204.164.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.168.0 to 12.204.168.255 | 12.204.168.0/24 | AS27529 | Computer Sciences Corporation | See Range |
| 12.204.169.0 to 12.204.169.255 | 12.204.169.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.170.0 to 12.204.171.255 | 12.204.170.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.172.0 to 12.204.173.255 | 12.204.172.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.174.0 to 12.204.174.255 | 12.204.174.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.175.0 to 12.204.175.255 | 12.204.175.0/24 | AS27529 | Computer Sciences Corporation | See Range |
| 12.204.176.0 to 12.204.179.255 | 12.204.176.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.180.0 to 12.204.183.255 | 12.204.180.0/22 | AS18569 | Communication Specialists | See Range |
| 12.204.184.0 to 12.204.191.255 | 12.204.184.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.192.0 to 12.204.199.255 | 12.204.192.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.200.0 to 12.204.200.255 | 12.204.200.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.201.0 to 12.204.201.255 | 12.204.201.0/24 | AS19957 | AT&T Corp. | See Range |
| 12.204.202.0 to 12.204.202.255 | 12.204.202.0/24 | AS19957 | AT&T Corp. | See Range |
| 12.204.203.0 to 12.204.203.255 | 12.204.203.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.204.0 to 12.204.204.255 | 12.204.204.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.205.0 to 12.204.205.255 | 12.204.205.0/24 | AS19957 | AT&T Corp. | See Range |
| 12.204.206.0 to 12.204.206.255 | 12.204.206.0/24 | AS19957 | AT&T Corp. | See Range |
| 12.204.207.0 to 12.204.207.255 | 12.204.207.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.204.208.0 to 12.204.209.255 | 12.204.208.0/23 | AS19957 | AT&T Corp. | See Range |
| 12.204.210.0 to 12.204.211.255 | 12.204.210.0/23 | AS7018 | AT&T Services Inc. | See Range |
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