IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.133.32.0 to 12.133.39.255 | 12.133.32.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.40.0 to 12.133.43.255 | 12.133.40.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.44.0 to 12.133.44.255 | 12.133.44.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.45.0 to 12.133.45.255 | 12.133.45.0/24 | AS53719 | Mainstream Technologies Inc. | See Range |
| 12.133.46.0 to 12.133.47.255 | 12.133.46.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.48.0 to 12.133.63.255 | 12.133.48.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.64.0 to 12.133.79.255 | 12.133.64.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.80.0 to 12.133.83.255 | 12.133.80.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.84.0 to 12.133.85.255 | 12.133.84.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.86.0 to 12.133.86.255 | 12.133.86.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.87.0 to 12.133.87.255 | 12.133.87.0/24 | AS21880 | Zendesk Inc. | See Range |
| 12.133.88.0 to 12.133.95.255 | 12.133.88.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.96.0 to 12.133.111.255 | 12.133.96.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.112.0 to 12.133.119.255 | 12.133.112.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.120.0 to 12.133.123.255 | 12.133.120.0/22 | AS27482 | American Eagle Computer Products Inc. | See Range |
| 12.133.124.0 to 12.133.127.255 | 12.133.124.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.128.0 to 12.133.159.255 | 12.133.128.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.160.0 to 12.133.175.255 | 12.133.160.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.176.0 to 12.133.183.255 | 12.133.176.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.184.0 to 12.133.187.255 | 12.133.184.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.188.0 to 12.133.188.255 | 12.133.188.0/24 | AS32300 | FTN Financial | See Range |
| 12.133.189.0 to 12.133.189.255 | 12.133.189.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.190.0 to 12.133.191.255 | 12.133.190.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.192.0 to 12.133.223.255 | 12.133.192.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.133.224.0 to 12.133.239.255 | 12.133.224.0/20 | AS7018 | AT&T Services Inc. | See Range |
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