IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.22.205.0 to 12.22.205.255 | 12.22.205.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.22.206.0 to 12.22.207.255 | 12.22.206.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.22.208.0 to 12.22.223.255 | 12.22.208.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.22.224.0 to 12.22.255.255 | 12.22.224.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.0.0 to 12.23.15.255 | 12.23.0.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.16.0 to 12.23.23.255 | 12.23.16.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.24.0 to 12.23.27.255 | 12.23.24.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.28.0 to 12.23.28.255 | 12.23.28.0/24 | AS27529 | Computer Sciences Corporation | See Range |
| 12.23.29.0 to 12.23.29.255 | 12.23.29.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.30.0 to 12.23.31.255 | 12.23.30.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.32.0 to 12.23.47.255 | 12.23.32.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.48.0 to 12.23.55.255 | 12.23.48.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.56.0 to 12.23.59.255 | 12.23.56.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.60.0 to 12.23.60.255 | 12.23.60.0/24 | AS36415 | Hotel Nikko of San Francisco Inc. | See Range |
| 12.23.61.0 to 12.23.61.255 | 12.23.61.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.62.0 to 12.23.63.255 | 12.23.62.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.64.0 to 12.23.127.255 | 12.23.64.0/18 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.128.0 to 12.23.159.255 | 12.23.128.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.160.0 to 12.23.175.255 | 12.23.160.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.176.0 to 12.23.183.255 | 12.23.176.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.184.0 to 12.23.187.255 | 12.23.184.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.188.0 to 12.23.188.255 | 12.23.188.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.189.0 to 12.23.189.255 | 12.23.189.0/24 | AS32367 | Long Term Care Group | See Range |
| 12.23.190.0 to 12.23.191.255 | 12.23.190.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.23.192.0 to 12.23.195.255 | 12.23.192.0/22 | AS7018 | AT&T Services Inc. | See Range |
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