IPv4 AS Names Directory: AS Name AT&T Data Communications Services
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.0.224.0 to 12.0.231.255 | 12.0.224.0/21 | AS2386 | AT&T Data Communications Services | See Range |
| 12.1.219.0 to 12.1.219.255 | 12.1.219.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.3.167.0 to 12.3.167.255 | 12.3.167.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.4.26.0 to 12.4.27.255 | 12.4.26.0/23 | AS2386 | AT&T Data Communications Services | See Range |
| 12.4.64.0 to 12.4.64.255 | 12.4.64.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.6.89.0 to 12.6.89.255 | 12.6.89.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.6.136.0 to 12.6.136.255 | 12.6.136.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.8.110.0 to 12.8.110.255 | 12.8.110.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.9.210.0 to 12.9.211.255 | 12.9.210.0/23 | AS2386 | AT&T Data Communications Services | See Range |
| 12.10.115.0 to 12.10.115.255 | 12.10.115.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.13.54.0 to 12.13.55.255 | 12.13.54.0/23 | AS2386 | AT&T Data Communications Services | See Range |
| 12.13.86.0 to 12.13.86.255 | 12.13.86.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.13.233.0 to 12.13.233.255 | 12.13.233.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.14.147.0 to 12.14.147.255 | 12.14.147.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.14.232.0 to 12.14.235.255 | 12.14.232.0/22 | AS2386 | AT&T Data Communications Services | See Range |
| 12.18.20.0 to 12.18.20.255 | 12.18.20.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.20.159.0 to 12.20.159.255 | 12.20.159.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.20.178.0 to 12.20.178.255 | 12.20.178.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.22.9.0 to 12.22.9.255 | 12.22.9.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.22.96.0 to 12.22.99.255 | 12.22.96.0/22 | AS2386 | AT&T Data Communications Services | See Range |
| 12.24.111.0 to 12.24.111.255 | 12.24.111.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.26.12.0 to 12.26.15.255 | 12.26.12.0/22 | AS2386 | AT&T Data Communications Services | See Range |
| 12.27.118.0 to 12.27.119.255 | 12.27.118.0/23 | AS2386 | AT&T Data Communications Services | See Range |
| 12.29.167.0 to 12.29.167.255 | 12.29.167.0/24 | AS2386 | AT&T Data Communications Services | See Range |
| 12.29.196.0 to 12.29.197.255 | 12.29.196.0/23 | AS2386 | AT&T Data Communications Services | See Range |
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