Les adresses IP débutant par 81.157.75 sont fournies par BTnet UK Regional network, elles appartiennent au CIDR (Classless Inter-Domain Routing) 81.128.0.0/11, le bloc IP comprant les adresses de 81.128.0.0 à 81.159.255.255). Le numéro de système autonome (ASN) est 2856.
| ASN | 2856 |
| IP commençant par | 81.128.0.0 |
| IP se terminant par | 81.159.255.255 |
| Nom ASN | BTnet UK Regional network |
| CDIR | 81.128.0.0/11 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 21/07/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | GB | Royaume-Uni | - | Gretton | 51,9667 | -1,9833 | 2017-07-20 |
| MaxMind | GB | Royaume-Uni | - | Northampton | 52,193 | -0,9032 | 2017-07-20 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.157.75.0 | 1369262848 | 0 |
| 81.157.75.1 | 1369262849 | 0 |
| 81.157.75.2 | 1369262850 | 0 |
| 81.157.75.3 | 1369262851 | 0 |
| 81.157.75.4 | 1369262852 | 0 |
| 81.157.75.5 | 1369262853 | 0 |
| 81.157.75.6 | 1369262854 | 0 |
| 81.157.75.7 | 1369262855 | 0 |
| 81.157.75.8 | 1369262856 | 0 |
| 81.157.75.9 | 1369262857 | 0 |
| 81.157.75.10 | 1369262858 | 0 |
| 81.157.75.11 | 1369262859 | 0 |
| 81.157.75.12 | 1369262860 | 0 |
| 81.157.75.13 | 1369262861 | 0 |
| 81.157.75.14 | 1369262862 | 0 |
| 81.157.75.15 | 1369262863 | 0 |
| 81.157.75.16 | 1369262864 | 0 |
| 81.157.75.17 | 1369262865 | 0 |
| 81.157.75.18 | 1369262866 | 0 |
| 81.157.75.19 | 1369262867 | 0 |
| 81.157.75.20 | 1369262868 | 0 |
| 81.157.75.21 | 1369262869 | 0 |
| 81.157.75.22 | 1369262870 | 0 |
| 81.157.75.23 | 1369262871 | 0 |
| 81.157.75.24 | 1369262872 | 0 |
| 81.157.75.25 | 1369262873 | 0 |
| 81.157.75.26 | 1369262874 | 0 |
| 81.157.75.27 | 1369262875 | 0 |
| 81.157.75.28 | 1369262876 | 0 |
| 81.157.75.29 | 1369262877 | 0 |
| 81.157.75.30 | 1369262878 | 0 |
| 81.157.75.31 | 1369262879 | 0 |
| 81.157.75.32 | 1369262880 | 0 |
| 81.157.75.33 | 1369262881 | 0 |
| 81.157.75.34 | 1369262882 | 0 |
| 81.157.75.35 | 1369262883 | 0 |
| 81.157.75.36 | 1369262884 | 0 |
| 81.157.75.37 | 1369262885 | 0 |
| 81.157.75.38 | 1369262886 | 0 |
| 81.157.75.39 | 1369262887 | 0 |
| 81.157.75.40 | 1369262888 | 0 |
| 81.157.75.41 | 1369262889 | 0 |
| 81.157.75.42 | 1369262890 | 0 |
| 81.157.75.43 | 1369262891 | 0 |
| 81.157.75.44 | 1369262892 | 0 |
| 81.157.75.45 | 1369262893 | 0 |
| 81.157.75.46 | 1369262894 | 0 |
| 81.157.75.47 | 1369262895 | 0 |
| 81.157.75.48 | 1369262896 | 0 |
| 81.157.75.49 | 1369262897 | 0 |
| 81.157.75.50 | 1369262898 | 0 |
| 81.157.75.51 | 1369262899 | 0 |
| 81.157.75.52 | 1369262900 | 0 |
| 81.157.75.53 | 1369262901 | 0 |
| 81.157.75.54 | 1369262902 | 0 |
| 81.157.75.55 | 1369262903 | 0 |
| 81.157.75.56 | 1369262904 | 0 |
| 81.157.75.57 | 1369262905 | 0 |
| 81.157.75.58 | 1369262906 | 0 |
| 81.157.75.59 | 1369262907 | 0 |
| 81.157.75.60 | 1369262908 | 0 |
| 81.157.75.61 | 1369262909 | 0 |
| 81.157.75.62 | 1369262910 | 0 |
| 81.157.75.63 | 1369262911 | 0 |
| 81.157.75.64 | 1369262912 | 0 |
| 81.157.75.65 | 1369262913 | 0 |
| 81.157.75.66 | 1369262914 | 0 |
| 81.157.75.67 | 1369262915 | 0 |
| 81.157.75.68 | 1369262916 | 0 |
| 81.157.75.69 | 1369262917 | 0 |
| 81.157.75.70 | 1369262918 | 0 |
| 81.157.75.71 | 1369262919 | 0 |
| 81.157.75.72 | 1369262920 | 0 |
| 81.157.75.73 | 1369262921 | 0 |
| 81.157.75.74 | 1369262922 | 0 |
| 81.157.75.75 | 1369262923 | 0 |
| 81.157.75.76 | 1369262924 | 0 |
| 81.157.75.77 | 1369262925 | 0 |
| 81.157.75.78 | 1369262926 | 0 |
| 81.157.75.79 | 1369262927 | 0 |
| 81.157.75.80 | 1369262928 | 0 |
| 81.157.75.81 | 1369262929 | 0 |
| 81.157.75.82 | 1369262930 | 0 |
| 81.157.75.83 | 1369262931 | 0 |
| 81.157.75.84 | 1369262932 | 0 |
| 81.157.75.85 | 1369262933 | 0 |