The IP address 63.203.72 is provided by AT&T Services, Inc., it's belong to the CDIR (Classless Inter-Domain Routing) 63.192.0.0/12 (range 63.192.0.0 to 63.207.255.255). The autonomous system number (ASN) is 7018.
| ASN | 7018 |
| IP starting by | 63.192.0.0 |
| IP ending by | 63.207.255.255 |
| ASN Name | AT&T Services, Inc. |
| CDIR | 63.192.0.0/12 |
| Numerical IP | |
| Registry | arin |
| Last update | 04/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | San Francisco | 37.7749 | -122.4194 | 2017-08-04 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-08-04 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 63.203.72.0 | 1070286848 | 0 |
| 63.203.72.1 | 1070286849 | 0 |
| 63.203.72.2 | 1070286850 | 0 |
| 63.203.72.3 | 1070286851 | 0 |
| 63.203.72.4 | 1070286852 | 0 |
| 63.203.72.5 | 1070286853 | 0 |
| 63.203.72.6 | 1070286854 | 0 |
| 63.203.72.7 | 1070286855 | 0 |
| 63.203.72.8 | 1070286856 | 0 |
| 63.203.72.9 | 1070286857 | 0 |
| 63.203.72.10 | 1070286858 | 0 |
| 63.203.72.11 | 1070286859 | 0 |
| 63.203.72.12 | 1070286860 | 0 |
| 63.203.72.13 | 1070286861 | 0 |
| 63.203.72.14 | 1070286862 | 0 |
| 63.203.72.15 | 1070286863 | 0 |
| 63.203.72.16 | 1070286864 | 0 |
| 63.203.72.17 | 1070286865 | 0 |
| 63.203.72.18 | 1070286866 | 0 |
| 63.203.72.19 | 1070286867 | 0 |
| 63.203.72.20 | 1070286868 | 0 |
| 63.203.72.21 | 1070286869 | 0 |
| 63.203.72.22 | 1070286870 | 0 |
| 63.203.72.23 | 1070286871 | 0 |
| 63.203.72.24 | 1070286872 | 0 |
| 63.203.72.25 | 1070286873 | 0 |
| 63.203.72.26 | 1070286874 | 0 |
| 63.203.72.27 | 1070286875 | 0 |
| 63.203.72.28 | 1070286876 | 0 |
| 63.203.72.29 | 1070286877 | 0 |
| 63.203.72.30 | 1070286878 | 0 |
| 63.203.72.31 | 1070286879 | 0 |
| 63.203.72.32 | 1070286880 | 0 |
| 63.203.72.33 | 1070286881 | 0 |
| 63.203.72.34 | 1070286882 | 0 |
| 63.203.72.35 | 1070286883 | 0 |
| 63.203.72.36 | 1070286884 | 0 |
| 63.203.72.37 | 1070286885 | 0 |
| 63.203.72.38 | 1070286886 | 0 |
| 63.203.72.39 | 1070286887 | 0 |
| 63.203.72.40 | 1070286888 | 0 |
| 63.203.72.41 | 1070286889 | 0 |
| 63.203.72.42 | 1070286890 | 0 |
| 63.203.72.43 | 1070286891 | 0 |
| 63.203.72.44 | 1070286892 | 0 |
| 63.203.72.45 | 1070286893 | 0 |
| 63.203.72.46 | 1070286894 | 0 |
| 63.203.72.47 | 1070286895 | 0 |
| 63.203.72.48 | 1070286896 | 0 |
| 63.203.72.49 | 1070286897 | 0 |
| 63.203.72.50 | 1070286898 | 0 |
| 63.203.72.51 | 1070286899 | 0 |
| 63.203.72.52 | 1070286900 | 0 |
| 63.203.72.53 | 1070286901 | 0 |
| 63.203.72.54 | 1070286902 | 0 |
| 63.203.72.55 | 1070286903 | 0 |
| 63.203.72.56 | 1070286904 | 0 |
| 63.203.72.57 | 1070286905 | 0 |
| 63.203.72.58 | 1070286906 | 0 |
| 63.203.72.59 | 1070286907 | 0 |
| 63.203.72.60 | 1070286908 | 0 |
| 63.203.72.61 | 1070286909 | 0 |
| 63.203.72.62 | 1070286910 | 0 |
| 63.203.72.63 | 1070286911 | 0 |
| 63.203.72.64 | 1070286912 | 0 |
| 63.203.72.65 | 1070286913 | 0 |
| 63.203.72.66 | 1070286914 | 0 |
| 63.203.72.67 | 1070286915 | 0 |
| 63.203.72.68 | 1070286916 | 0 |
| 63.203.72.69 | 1070286917 | 0 |
| 63.203.72.70 | 1070286918 | 0 |
| 63.203.72.71 | 1070286919 | 0 |
| 63.203.72.72 | 1070286920 | 0 |
| 63.203.72.73 | 1070286921 | 0 |
| 63.203.72.74 | 1070286922 | 0 |
| 63.203.72.75 | 1070286923 | 0 |
| 63.203.72.76 | 1070286924 | 0 |
| 63.203.72.77 | 1070286925 | 0 |
| 63.203.72.78 | 1070286926 | 0 |
| 63.203.72.79 | 1070286927 | 0 |
| 63.203.72.80 | 1070286928 | 0 |
| 63.203.72.81 | 1070286929 | 0 |
| 63.203.72.82 | 1070286930 | 0 |
| 63.203.72.83 | 1070286931 | 0 |
| 63.203.72.84 | 1070286932 | 0 |
| 63.203.72.85 | 1070286933 | 0 |