Les adresses IP débutant par 12.243.0 sont fournies par AT&T Services, Inc., elles appartiennent au CIDR (Classless Inter-Domain Routing) 12.0.0.0/8, le bloc IP comprant les adresses de 12.0.0.0 à 12.255.255.255). Le numéro de système autonome (ASN) est 7018.
| ASN | 7018 |
| IP commençant par | 12.0.0.0 |
| IP se terminant par | 12.255.255.255 |
| Nom ASN | AT&T Services, Inc. |
| CDIR | 12.0.0.0/8 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 16/09/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Middletown | 40,3956 | -74,1106 | 2017-09-16 |
| MaxMind | US | États-Unis | - | Middletown Township | 40,3965 | -74,1075 | 2017-09-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 12.243.0.0 | 217251840 | 0 |
| 12.243.0.1 | 217251841 | 0 |
| 12.243.0.2 | 217251842 | 0 |
| 12.243.0.3 | 217251843 | 0 |
| 12.243.0.4 | 217251844 | 0 |
| 12.243.0.5 | 217251845 | 0 |
| 12.243.0.6 | 217251846 | 0 |
| 12.243.0.7 | 217251847 | 0 |
| 12.243.0.8 | 217251848 | 0 |
| 12.243.0.9 | 217251849 | 0 |
| 12.243.0.10 | 217251850 | 0 |
| 12.243.0.11 | 217251851 | 0 |
| 12.243.0.12 | 217251852 | 0 |
| 12.243.0.13 | 217251853 | 0 |
| 12.243.0.14 | 217251854 | 0 |
| 12.243.0.15 | 217251855 | 0 |
| 12.243.0.16 | 217251856 | 0 |
| 12.243.0.17 | 217251857 | 0 |
| 12.243.0.18 | 217251858 | 0 |
| 12.243.0.19 | 217251859 | 0 |
| 12.243.0.20 | 217251860 | 0 |
| 12.243.0.21 | 217251861 | 0 |
| 12.243.0.22 | 217251862 | 0 |
| 12.243.0.23 | 217251863 | 0 |
| 12.243.0.24 | 217251864 | 0 |
| 12.243.0.25 | 217251865 | 0 |
| 12.243.0.26 | 217251866 | 0 |
| 12.243.0.27 | 217251867 | 0 |
| 12.243.0.28 | 217251868 | 0 |
| 12.243.0.29 | 217251869 | 0 |
| 12.243.0.30 | 217251870 | 0 |
| 12.243.0.31 | 217251871 | 0 |
| 12.243.0.32 | 217251872 | 0 |
| 12.243.0.33 | 217251873 | 0 |
| 12.243.0.34 | 217251874 | 0 |
| 12.243.0.35 | 217251875 | 0 |
| 12.243.0.36 | 217251876 | 0 |
| 12.243.0.37 | 217251877 | 0 |
| 12.243.0.38 | 217251878 | 0 |
| 12.243.0.39 | 217251879 | 0 |
| 12.243.0.40 | 217251880 | 0 |
| 12.243.0.41 | 217251881 | 0 |
| 12.243.0.42 | 217251882 | 0 |
| 12.243.0.43 | 217251883 | 0 |
| 12.243.0.44 | 217251884 | 0 |
| 12.243.0.45 | 217251885 | 0 |
| 12.243.0.46 | 217251886 | 0 |
| 12.243.0.47 | 217251887 | 0 |
| 12.243.0.48 | 217251888 | 0 |
| 12.243.0.49 | 217251889 | 0 |
| 12.243.0.50 | 217251890 | 0 |
| 12.243.0.51 | 217251891 | 0 |
| 12.243.0.52 | 217251892 | 0 |
| 12.243.0.53 | 217251893 | 0 |
| 12.243.0.54 | 217251894 | 0 |
| 12.243.0.55 | 217251895 | 0 |
| 12.243.0.56 | 217251896 | 0 |
| 12.243.0.57 | 217251897 | 0 |
| 12.243.0.58 | 217251898 | 0 |
| 12.243.0.59 | 217251899 | 0 |
| 12.243.0.60 | 217251900 | 0 |
| 12.243.0.61 | 217251901 | 0 |
| 12.243.0.62 | 217251902 | 0 |
| 12.243.0.63 | 217251903 | 0 |
| 12.243.0.64 | 217251904 | 0 |
| 12.243.0.65 | 217251905 | 0 |
| 12.243.0.66 | 217251906 | 0 |
| 12.243.0.67 | 217251907 | 0 |
| 12.243.0.68 | 217251908 | 0 |
| 12.243.0.69 | 217251909 | 0 |
| 12.243.0.70 | 217251910 | 0 |
| 12.243.0.71 | 217251911 | 0 |
| 12.243.0.72 | 217251912 | 0 |
| 12.243.0.73 | 217251913 | 0 |
| 12.243.0.74 | 217251914 | 0 |
| 12.243.0.75 | 217251915 | 0 |
| 12.243.0.76 | 217251916 | 0 |
| 12.243.0.77 | 217251917 | 0 |
| 12.243.0.78 | 217251918 | 0 |
| 12.243.0.79 | 217251919 | 0 |
| 12.243.0.80 | 217251920 | 0 |
| 12.243.0.81 | 217251921 | 0 |
| 12.243.0.82 | 217251922 | 0 |
| 12.243.0.83 | 217251923 | 0 |
| 12.243.0.84 | 217251924 | 0 |
| 12.243.0.85 | 217251925 | 0 |