Les adresses IP débutant par 66.123.81 sont fournies par AT&T Internet Services, elles appartiennent au CIDR (Classless Inter-Domain Routing) 66.120.0.0/13, le bloc IP comprant les adresses de 66.120.0.0 à 66.127.255.255). Le numéro de système autonome (ASN) est 7132.
| ASN | 7132 |
| IP commençant par | 66.120.0.0 |
| IP se terminant par | 66.127.255.255 |
| Nom ASN | AT&T Internet Services |
| CDIR | 66.120.0.0/13 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 30/10/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | San Francisco | 37,7913 | -122,4008 | 2019-02-27 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2019-02-27 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 66.123.81.0 | 1115377920 | 0 |
| 66.123.81.1 | 1115377921 | 0 |
| 66.123.81.2 | 1115377922 | 0 |
| 66.123.81.3 | 1115377923 | 0 |
| 66.123.81.4 | 1115377924 | 0 |
| 66.123.81.5 | 1115377925 | 0 |
| 66.123.81.6 | 1115377926 | 0 |
| 66.123.81.7 | 1115377927 | 0 |
| 66.123.81.8 | 1115377928 | 0 |
| 66.123.81.9 | 1115377929 | 0 |
| 66.123.81.10 | 1115377930 | 0 |
| 66.123.81.11 | 1115377931 | 0 |
| 66.123.81.12 | 1115377932 | 0 |
| 66.123.81.13 | 1115377933 | 0 |
| 66.123.81.14 | 1115377934 | 0 |
| 66.123.81.15 | 1115377935 | 0 |
| 66.123.81.16 | 1115377936 | 0 |
| 66.123.81.17 | 1115377937 | 0 |
| 66.123.81.18 | 1115377938 | 0 |
| 66.123.81.19 | 1115377939 | 0 |
| 66.123.81.20 | 1115377940 | 0 |
| 66.123.81.21 | 1115377941 | 0 |
| 66.123.81.22 | 1115377942 | 0 |
| 66.123.81.23 | 1115377943 | 0 |
| 66.123.81.24 | 1115377944 | 0 |
| 66.123.81.25 | 1115377945 | 0 |
| 66.123.81.26 | 1115377946 | 0 |
| 66.123.81.27 | 1115377947 | 0 |
| 66.123.81.28 | 1115377948 | 0 |
| 66.123.81.29 | 1115377949 | 0 |
| 66.123.81.30 | 1115377950 | 0 |
| 66.123.81.31 | 1115377951 | 0 |
| 66.123.81.32 | 1115377952 | 0 |
| 66.123.81.33 | 1115377953 | 0 |
| 66.123.81.34 | 1115377954 | 0 |
| 66.123.81.35 | 1115377955 | 0 |
| 66.123.81.36 | 1115377956 | 0 |
| 66.123.81.37 | 1115377957 | 0 |
| 66.123.81.38 | 1115377958 | 0 |
| 66.123.81.39 | 1115377959 | 0 |
| 66.123.81.40 | 1115377960 | 0 |
| 66.123.81.41 | 1115377961 | 0 |
| 66.123.81.42 | 1115377962 | 0 |
| 66.123.81.43 | 1115377963 | 0 |
| 66.123.81.44 | 1115377964 | 0 |
| 66.123.81.45 | 1115377965 | 0 |
| 66.123.81.46 | 1115377966 | 0 |
| 66.123.81.47 | 1115377967 | 0 |
| 66.123.81.48 | 1115377968 | 0 |
| 66.123.81.49 | 1115377969 | 0 |
| 66.123.81.50 | 1115377970 | 0 |
| 66.123.81.51 | 1115377971 | 0 |
| 66.123.81.52 | 1115377972 | 0 |
| 66.123.81.53 | 1115377973 | 0 |
| 66.123.81.54 | 1115377974 | 0 |
| 66.123.81.55 | 1115377975 | 0 |
| 66.123.81.56 | 1115377976 | 0 |
| 66.123.81.57 | 1115377977 | 0 |
| 66.123.81.58 | 1115377978 | 0 |
| 66.123.81.59 | 1115377979 | 0 |
| 66.123.81.60 | 1115377980 | 0 |
| 66.123.81.61 | 1115377981 | 0 |
| 66.123.81.62 | 1115377982 | 0 |
| 66.123.81.63 | 1115377983 | 0 |
| 66.123.81.64 | 1115377984 | 0 |
| 66.123.81.65 | 1115377985 | 0 |
| 66.123.81.66 | 1115377986 | 0 |
| 66.123.81.67 | 1115377987 | 0 |
| 66.123.81.68 | 1115377988 | 0 |
| 66.123.81.69 | 1115377989 | 0 |
| 66.123.81.70 | 1115377990 | 0 |
| 66.123.81.71 | 1115377991 | 0 |
| 66.123.81.72 | 1115377992 | 0 |
| 66.123.81.73 | 1115377993 | 0 |
| 66.123.81.74 | 1115377994 | 0 |
| 66.123.81.75 | 1115377995 | 0 |
| 66.123.81.76 | 1115377996 | 0 |
| 66.123.81.77 | 1115377997 | 0 |
| 66.123.81.78 | 1115377998 | 0 |
| 66.123.81.79 | 1115377999 | 0 |
| 66.123.81.80 | 1115378000 | 0 |
| 66.123.81.81 | 1115378001 | 0 |
| 66.123.81.82 | 1115378002 | 0 |
| 66.123.81.83 | 1115378003 | 0 |
| 66.123.81.84 | 1115378004 | 0 |
| 66.123.81.85 | 1115378005 | 0 |