L'indirizzo IP 81.77.239 è fornito da UK Backbone Network, che è di proprietà del CIDR (Classless Inter-Domain Routing) 81.76.0.0/14, IP tra 81.76.0.0 a 81.79.255.255 ). Il numero di sistema autonomo (ASN) è 5388.
| ASN | 5388 |
| IP inizia con | 81.76.0.0 |
| IP finale con | 81.79.255.255 |
| ASN Nome | UK Backbone Network |
| CDIR | 81.76.0.0/14 |
| IP numerico | |
| Registe | ripencc |
| Ultimo aggiornamento | 31/07/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | GB | United Kingdom | - | Sheffield | 53,383 | -1,4659 | 2017-07-30 |
| MaxMind | GB | United Kingdom | - | - | 51,4964 | -0,1224 | 2017-07-30 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.77.239.0 | 1364061952 | 0 |
| 81.77.239.1 | 1364061953 | 0 |
| 81.77.239.2 | 1364061954 | 0 |
| 81.77.239.3 | 1364061955 | 0 |
| 81.77.239.4 | 1364061956 | 0 |
| 81.77.239.5 | 1364061957 | 0 |
| 81.77.239.6 | 1364061958 | 0 |
| 81.77.239.7 | 1364061959 | 0 |
| 81.77.239.8 | 1364061960 | 0 |
| 81.77.239.9 | 1364061961 | 0 |
| 81.77.239.10 | 1364061962 | 0 |
| 81.77.239.11 | 1364061963 | 0 |
| 81.77.239.12 | 1364061964 | 0 |
| 81.77.239.13 | 1364061965 | 0 |
| 81.77.239.14 | 1364061966 | 0 |
| 81.77.239.15 | 1364061967 | 0 |
| 81.77.239.16 | 1364061968 | 0 |
| 81.77.239.17 | 1364061969 | 0 |
| 81.77.239.18 | 1364061970 | 0 |
| 81.77.239.19 | 1364061971 | 0 |
| 81.77.239.20 | 1364061972 | 0 |
| 81.77.239.21 | 1364061973 | 0 |
| 81.77.239.22 | 1364061974 | 0 |
| 81.77.239.23 | 1364061975 | 0 |
| 81.77.239.24 | 1364061976 | 0 |
| 81.77.239.25 | 1364061977 | 0 |
| 81.77.239.26 | 1364061978 | 0 |
| 81.77.239.27 | 1364061979 | 0 |
| 81.77.239.28 | 1364061980 | 0 |
| 81.77.239.29 | 1364061981 | 0 |
| 81.77.239.30 | 1364061982 | 0 |
| 81.77.239.31 | 1364061983 | 0 |
| 81.77.239.32 | 1364061984 | 0 |
| 81.77.239.33 | 1364061985 | 0 |
| 81.77.239.34 | 1364061986 | 0 |
| 81.77.239.35 | 1364061987 | 0 |
| 81.77.239.36 | 1364061988 | 0 |
| 81.77.239.37 | 1364061989 | 0 |
| 81.77.239.38 | 1364061990 | 0 |
| 81.77.239.39 | 1364061991 | 0 |
| 81.77.239.40 | 1364061992 | 0 |
| 81.77.239.41 | 1364061993 | 0 |
| 81.77.239.42 | 1364061994 | 0 |
| 81.77.239.43 | 1364061995 | 0 |
| 81.77.239.44 | 1364061996 | 0 |
| 81.77.239.45 | 1364061997 | 0 |
| 81.77.239.46 | 1364061998 | 0 |
| 81.77.239.47 | 1364061999 | 0 |
| 81.77.239.48 | 1364062000 | 0 |
| 81.77.239.49 | 1364062001 | 0 |
| 81.77.239.50 | 1364062002 | 0 |
| 81.77.239.51 | 1364062003 | 0 |
| 81.77.239.52 | 1364062004 | 0 |
| 81.77.239.53 | 1364062005 | 0 |
| 81.77.239.54 | 1364062006 | 0 |
| 81.77.239.55 | 1364062007 | 0 |
| 81.77.239.56 | 1364062008 | 0 |
| 81.77.239.57 | 1364062009 | 0 |
| 81.77.239.58 | 1364062010 | 0 |
| 81.77.239.59 | 1364062011 | 0 |
| 81.77.239.60 | 1364062012 | 0 |
| 81.77.239.61 | 1364062013 | 0 |
| 81.77.239.62 | 1364062014 | 0 |
| 81.77.239.63 | 1364062015 | 0 |
| 81.77.239.64 | 1364062016 | 0 |
| 81.77.239.65 | 1364062017 | 0 |
| 81.77.239.66 | 1364062018 | 0 |
| 81.77.239.67 | 1364062019 | 0 |
| 81.77.239.68 | 1364062020 | 0 |
| 81.77.239.69 | 1364062021 | 0 |
| 81.77.239.70 | 1364062022 | 0 |
| 81.77.239.71 | 1364062023 | 0 |
| 81.77.239.72 | 1364062024 | 0 |
| 81.77.239.73 | 1364062025 | 0 |
| 81.77.239.74 | 1364062026 | 0 |
| 81.77.239.75 | 1364062027 | 0 |
| 81.77.239.76 | 1364062028 | 0 |
| 81.77.239.77 | 1364062029 | 0 |
| 81.77.239.78 | 1364062030 | 0 |
| 81.77.239.79 | 1364062031 | 0 |
| 81.77.239.80 | 1364062032 | 0 |
| 81.77.239.81 | 1364062033 | 0 |
| 81.77.239.82 | 1364062034 | 0 |
| 81.77.239.83 | 1364062035 | 0 |
| 81.77.239.84 | 1364062036 | 0 |
| 81.77.239.85 | 1364062037 | 0 |