The IP address 81.137.78 is provided by BTnet UK Regional network, it's belong to the CDIR (Classless Inter-Domain Routing) 81.128.0.0/11 (range 81.128.0.0 to 81.159.255.255). The autonomous system number (ASN) is 2856.
| ASN | 2856 |
| IP starting by | 81.128.0.0 |
| IP ending by | 81.159.255.255 |
| ASN Name | BTnet UK Regional network |
| CDIR | 81.128.0.0/11 |
| Numerical IP | |
| Registry | ripencc |
| Last update | 22/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | GB | United Kingdom | - | Newport | 51.5877 | -2.9984 | 2017-07-22 |
| MaxMind | GB | United Kingdom | - | Lisburn | 54.545 | -6.2561 | 2017-07-22 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.137.78.0 | 1367952896 | 0 |
| 81.137.78.1 | 1367952897 | 0 |
| 81.137.78.2 | 1367952898 | 0 |
| 81.137.78.3 | 1367952899 | 0 |
| 81.137.78.4 | 1367952900 | 0 |
| 81.137.78.5 | 1367952901 | 0 |
| 81.137.78.6 | 1367952902 | 0 |
| 81.137.78.7 | 1367952903 | 0 |
| 81.137.78.8 | 1367952904 | 0 |
| 81.137.78.9 | 1367952905 | 0 |
| 81.137.78.10 | 1367952906 | 0 |
| 81.137.78.11 | 1367952907 | 0 |
| 81.137.78.12 | 1367952908 | 0 |
| 81.137.78.13 | 1367952909 | 0 |
| 81.137.78.14 | 1367952910 | 0 |
| 81.137.78.15 | 1367952911 | 0 |
| 81.137.78.16 | 1367952912 | 0 |
| 81.137.78.17 | 1367952913 | 0 |
| 81.137.78.18 | 1367952914 | 0 |
| 81.137.78.19 | 1367952915 | 0 |
| 81.137.78.20 | 1367952916 | 0 |
| 81.137.78.21 | 1367952917 | 0 |
| 81.137.78.22 | 1367952918 | 0 |
| 81.137.78.23 | 1367952919 | 0 |
| 81.137.78.24 | 1367952920 | 0 |
| 81.137.78.25 | 1367952921 | 0 |
| 81.137.78.26 | 1367952922 | 0 |
| 81.137.78.27 | 1367952923 | 0 |
| 81.137.78.28 | 1367952924 | 0 |
| 81.137.78.29 | 1367952925 | 0 |
| 81.137.78.30 | 1367952926 | 0 |
| 81.137.78.31 | 1367952927 | 0 |
| 81.137.78.32 | 1367952928 | 0 |
| 81.137.78.33 | 1367952929 | 0 |
| 81.137.78.34 | 1367952930 | 0 |
| 81.137.78.35 | 1367952931 | 0 |
| 81.137.78.36 | 1367952932 | 0 |
| 81.137.78.37 | 1367952933 | 0 |
| 81.137.78.38 | 1367952934 | 0 |
| 81.137.78.39 | 1367952935 | 0 |
| 81.137.78.40 | 1367952936 | 0 |
| 81.137.78.41 | 1367952937 | 0 |
| 81.137.78.42 | 1367952938 | 0 |
| 81.137.78.43 | 1367952939 | 0 |
| 81.137.78.44 | 1367952940 | 0 |
| 81.137.78.45 | 1367952941 | 0 |
| 81.137.78.46 | 1367952942 | 0 |
| 81.137.78.47 | 1367952943 | 0 |
| 81.137.78.48 | 1367952944 | 0 |
| 81.137.78.49 | 1367952945 | 0 |
| 81.137.78.50 | 1367952946 | 0 |
| 81.137.78.51 | 1367952947 | 0 |
| 81.137.78.52 | 1367952948 | 0 |
| 81.137.78.53 | 1367952949 | 0 |
| 81.137.78.54 | 1367952950 | 0 |
| 81.137.78.55 | 1367952951 | 0 |
| 81.137.78.56 | 1367952952 | 0 |
| 81.137.78.57 | 1367952953 | 0 |
| 81.137.78.58 | 1367952954 | 0 |
| 81.137.78.59 | 1367952955 | 0 |
| 81.137.78.60 | 1367952956 | 0 |
| 81.137.78.61 | 1367952957 | 0 |
| 81.137.78.62 | 1367952958 | 0 |
| 81.137.78.63 | 1367952959 | 0 |
| 81.137.78.64 | 1367952960 | 0 |
| 81.137.78.65 | 1367952961 | 0 |
| 81.137.78.66 | 1367952962 | 0 |
| 81.137.78.67 | 1367952963 | 0 |
| 81.137.78.68 | 1367952964 | 0 |
| 81.137.78.69 | 1367952965 | 0 |
| 81.137.78.70 | 1367952966 | 0 |
| 81.137.78.71 | 1367952967 | 0 |
| 81.137.78.72 | 1367952968 | 0 |
| 81.137.78.73 | 1367952969 | 0 |
| 81.137.78.74 | 1367952970 | 0 |
| 81.137.78.75 | 1367952971 | 0 |
| 81.137.78.76 | 1367952972 | 0 |
| 81.137.78.77 | 1367952973 | 0 |
| 81.137.78.78 | 1367952974 | 0 |
| 81.137.78.79 | 1367952975 | 0 |
| 81.137.78.80 | 1367952976 | 0 |
| 81.137.78.81 | 1367952977 | 0 |
| 81.137.78.82 | 1367952978 | 0 |
| 81.137.78.83 | 1367952979 | 0 |
| 81.137.78.84 | 1367952980 | 0 |
| 81.137.78.85 | 1367952981 | 0 |