Directório de AS & ASN IPv4
| Intervalo IP | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.27.224.0 a 12.27.239.255 | 12.27.224.0/20 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.27.240.0 a 12.27.247.255 | 12.27.240.0/21 | AS2727 | Electric Plant Board of the City of Glasgow Kentucky | Veja Intervalo |
| 12.27.248.0 a 12.27.255.255 | 12.27.248.0/21 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.0.0 a 12.28.31.255 | 12.28.0.0/19 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.32.0 a 12.28.35.255 | 12.28.32.0/22 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.36.0 a 12.28.37.255 | 12.28.36.0/23 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.38.0 a 12.28.38.255 | 12.28.38.0/24 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.39.0 a 12.28.39.255 | 12.28.39.0/24 | AS22197 | Apps Communications | Veja Intervalo |
| 12.28.40.0 a 12.28.47.255 | 12.28.40.0/21 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.48.0 a 12.28.49.255 | 12.28.48.0/23 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.50.0 a 12.28.50.255 | 12.28.50.0/24 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.51.0 a 12.28.51.255 | 12.28.51.0/24 | AS394795 | Communication Solutions LLC | Veja Intervalo |
| 12.28.52.0 a 12.28.53.255 | 12.28.52.0/23 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.54.0 a 12.28.54.255 | 12.28.54.0/24 | AS40230 | Columbus Telephone Company Incorporated | Veja Intervalo |
| 12.28.55.0 a 12.28.55.255 | 12.28.55.0/24 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.56.0 a 12.28.63.255 | 12.28.56.0/21 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.64.0 a 12.28.79.255 | 12.28.64.0/20 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.80.0 a 12.28.80.255 | 12.28.80.0/24 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.81.0 a 12.28.81.255 | 12.28.81.0/24 | AS63255 | The Hertz Corp. | Veja Intervalo |
| 12.28.82.0 a 12.28.83.255 | 12.28.82.0/23 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.84.0 a 12.28.87.255 | 12.28.84.0/22 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.88.0 a 12.28.95.255 | 12.28.88.0/21 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.96.0 a 12.28.103.255 | 12.28.96.0/21 | AS7018 | AT&T Services Inc. | Veja Intervalo |
| 12.28.104.0 a 12.28.105.255 | 12.28.104.0/23 | AS393691 | Forum Communications Company | Veja Intervalo |
| 12.28.106.0 a 12.28.107.255 | 12.28.106.0/23 | AS7018 | AT&T Services Inc. | Veja Intervalo |
Página 497 do 23.854