Les adresses IP débutant par 99.81.203 sont fournies par AT&T Services, Inc., elles appartiennent au CIDR (Classless Inter-Domain Routing) 99.64.0.0/11, le bloc IP comprant les adresses de 99.64.0.0 à 99.95.255.255). Le numéro de système autonome (ASN) est 7018.
| ASN | 7018 |
| IP commençant par | 99.64.0.0 |
| IP se terminant par | 99.95.255.255 |
| Nom ASN | AT&T Services, Inc. |
| CDIR | 99.64.0.0/11 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 19/12/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Richardson | 32,9924 | -96,6821 | 2017-12-19 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-12-19 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 99.81.203.0 | 1666304768 | 0 |
| 99.81.203.1 | 1666304769 | 0 |
| 99.81.203.2 | 1666304770 | 0 |
| 99.81.203.3 | 1666304771 | 0 |
| 99.81.203.4 | 1666304772 | 0 |
| 99.81.203.5 | 1666304773 | 0 |
| 99.81.203.6 | 1666304774 | 0 |
| 99.81.203.7 | 1666304775 | 0 |
| 99.81.203.8 | 1666304776 | 0 |
| 99.81.203.9 | 1666304777 | 0 |
| 99.81.203.10 | 1666304778 | 0 |
| 99.81.203.11 | 1666304779 | 0 |
| 99.81.203.12 | 1666304780 | 0 |
| 99.81.203.13 | 1666304781 | 0 |
| 99.81.203.14 | 1666304782 | 0 |
| 99.81.203.15 | 1666304783 | 0 |
| 99.81.203.16 | 1666304784 | 0 |
| 99.81.203.17 | 1666304785 | 0 |
| 99.81.203.18 | 1666304786 | 0 |
| 99.81.203.19 | 1666304787 | 0 |
| 99.81.203.20 | 1666304788 | 0 |
| 99.81.203.21 | 1666304789 | 0 |
| 99.81.203.22 | 1666304790 | 0 |
| 99.81.203.23 | 1666304791 | 0 |
| 99.81.203.24 | 1666304792 | 0 |
| 99.81.203.25 | 1666304793 | 0 |
| 99.81.203.26 | 1666304794 | 0 |
| 99.81.203.27 | 1666304795 | 0 |
| 99.81.203.28 | 1666304796 | 0 |
| 99.81.203.29 | 1666304797 | 0 |
| 99.81.203.30 | 1666304798 | 0 |
| 99.81.203.31 | 1666304799 | 0 |
| 99.81.203.32 | 1666304800 | 0 |
| 99.81.203.33 | 1666304801 | 0 |
| 99.81.203.34 | 1666304802 | 0 |
| 99.81.203.35 | 1666304803 | 0 |
| 99.81.203.36 | 1666304804 | 0 |
| 99.81.203.37 | 1666304805 | 0 |
| 99.81.203.38 | 1666304806 | 0 |
| 99.81.203.39 | 1666304807 | 0 |
| 99.81.203.40 | 1666304808 | 0 |
| 99.81.203.41 | 1666304809 | 0 |
| 99.81.203.42 | 1666304810 | 0 |
| 99.81.203.43 | 1666304811 | 0 |
| 99.81.203.44 | 1666304812 | 0 |
| 99.81.203.45 | 1666304813 | 0 |
| 99.81.203.46 | 1666304814 | 0 |
| 99.81.203.47 | 1666304815 | 0 |
| 99.81.203.48 | 1666304816 | 0 |
| 99.81.203.49 | 1666304817 | 0 |
| 99.81.203.50 | 1666304818 | 0 |
| 99.81.203.51 | 1666304819 | 0 |
| 99.81.203.52 | 1666304820 | 0 |
| 99.81.203.53 | 1666304821 | 0 |
| 99.81.203.54 | 1666304822 | 0 |
| 99.81.203.55 | 1666304823 | 0 |
| 99.81.203.56 | 1666304824 | 0 |
| 99.81.203.57 | 1666304825 | 0 |
| 99.81.203.58 | 1666304826 | 0 |
| 99.81.203.59 | 1666304827 | 0 |
| 99.81.203.60 | 1666304828 | 0 |
| 99.81.203.61 | 1666304829 | 0 |
| 99.81.203.62 | 1666304830 | 0 |
| 99.81.203.63 | 1666304831 | 0 |
| 99.81.203.64 | 1666304832 | 0 |
| 99.81.203.65 | 1666304833 | 0 |
| 99.81.203.66 | 1666304834 | 0 |
| 99.81.203.67 | 1666304835 | 0 |
| 99.81.203.68 | 1666304836 | 0 |
| 99.81.203.69 | 1666304837 | 0 |
| 99.81.203.70 | 1666304838 | 0 |
| 99.81.203.71 | 1666304839 | 0 |
| 99.81.203.72 | 1666304840 | 0 |
| 99.81.203.73 | 1666304841 | 0 |
| 99.81.203.74 | 1666304842 | 0 |
| 99.81.203.75 | 1666304843 | 0 |
| 99.81.203.76 | 1666304844 | 0 |
| 99.81.203.77 | 1666304845 | 0 |
| 99.81.203.78 | 1666304846 | 0 |
| 99.81.203.79 | 1666304847 | 0 |
| 99.81.203.80 | 1666304848 | 0 |
| 99.81.203.81 | 1666304849 | 0 |
| 99.81.203.82 | 1666304850 | 0 |
| 99.81.203.83 | 1666304851 | 0 |
| 99.81.203.84 | 1666304852 | 0 |
| 99.81.203.85 | 1666304853 | 0 |