The IP address 81.139.77 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 | 04/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | GB | United Kingdom | - | Warrington | 52.1845 | -0.6876 | 2017-07-03 |
| MaxMind | GB | United Kingdom | - | - | 51.4964 | -0.1224 | 2017-07-03 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.139.77.0 | 1368083712 | 0 |
| 81.139.77.1 | 1368083713 | 0 |
| 81.139.77.2 | 1368083714 | 0 |
| 81.139.77.3 | 1368083715 | 0 |
| 81.139.77.4 | 1368083716 | 0 |
| 81.139.77.5 | 1368083717 | 0 |
| 81.139.77.6 | 1368083718 | 0 |
| 81.139.77.7 | 1368083719 | 0 |
| 81.139.77.8 | 1368083720 | 0 |
| 81.139.77.9 | 1368083721 | 0 |
| 81.139.77.10 | 1368083722 | 0 |
| 81.139.77.11 | 1368083723 | 0 |
| 81.139.77.12 | 1368083724 | 0 |
| 81.139.77.13 | 1368083725 | 0 |
| 81.139.77.14 | 1368083726 | 0 |
| 81.139.77.15 | 1368083727 | 0 |
| 81.139.77.16 | 1368083728 | 0 |
| 81.139.77.17 | 1368083729 | 0 |
| 81.139.77.18 | 1368083730 | 0 |
| 81.139.77.19 | 1368083731 | 0 |
| 81.139.77.20 | 1368083732 | 0 |
| 81.139.77.21 | 1368083733 | 0 |
| 81.139.77.22 | 1368083734 | 0 |
| 81.139.77.23 | 1368083735 | 0 |
| 81.139.77.24 | 1368083736 | 0 |
| 81.139.77.25 | 1368083737 | 0 |
| 81.139.77.26 | 1368083738 | 0 |
| 81.139.77.27 | 1368083739 | 0 |
| 81.139.77.28 | 1368083740 | 0 |
| 81.139.77.29 | 1368083741 | 0 |
| 81.139.77.30 | 1368083742 | 0 |
| 81.139.77.31 | 1368083743 | 0 |
| 81.139.77.32 | 1368083744 | 0 |
| 81.139.77.33 | 1368083745 | 0 |
| 81.139.77.34 | 1368083746 | 0 |
| 81.139.77.35 | 1368083747 | 0 |
| 81.139.77.36 | 1368083748 | 0 |
| 81.139.77.37 | 1368083749 | 0 |
| 81.139.77.38 | 1368083750 | 0 |
| 81.139.77.39 | 1368083751 | 0 |
| 81.139.77.40 | 1368083752 | 0 |
| 81.139.77.41 | 1368083753 | 0 |
| 81.139.77.42 | 1368083754 | 0 |
| 81.139.77.43 | 1368083755 | 0 |
| 81.139.77.44 | 1368083756 | 0 |
| 81.139.77.45 | 1368083757 | 0 |
| 81.139.77.46 | 1368083758 | 0 |
| 81.139.77.47 | 1368083759 | 0 |
| 81.139.77.48 | 1368083760 | 0 |
| 81.139.77.49 | 1368083761 | 0 |
| 81.139.77.50 | 1368083762 | 0 |
| 81.139.77.51 | 1368083763 | 0 |
| 81.139.77.52 | 1368083764 | 0 |
| 81.139.77.53 | 1368083765 | 0 |
| 81.139.77.54 | 1368083766 | 0 |
| 81.139.77.55 | 1368083767 | 0 |
| 81.139.77.56 | 1368083768 | 0 |
| 81.139.77.57 | 1368083769 | 0 |
| 81.139.77.58 | 1368083770 | 0 |
| 81.139.77.59 | 1368083771 | 0 |
| 81.139.77.60 | 1368083772 | 0 |
| 81.139.77.61 | 1368083773 | 0 |
| 81.139.77.62 | 1368083774 | 0 |
| 81.139.77.63 | 1368083775 | 0 |
| 81.139.77.64 | 1368083776 | 0 |
| 81.139.77.65 | 1368083777 | 0 |
| 81.139.77.66 | 1368083778 | 0 |
| 81.139.77.67 | 1368083779 | 0 |
| 81.139.77.68 | 1368083780 | 0 |
| 81.139.77.69 | 1368083781 | 0 |
| 81.139.77.70 | 1368083782 | 0 |
| 81.139.77.71 | 1368083783 | 0 |
| 81.139.77.72 | 1368083784 | 0 |
| 81.139.77.73 | 1368083785 | 0 |
| 81.139.77.74 | 1368083786 | 0 |
| 81.139.77.75 | 1368083787 | 0 |
| 81.139.77.76 | 1368083788 | 0 |
| 81.139.77.77 | 1368083789 | 0 |
| 81.139.77.78 | 1368083790 | 0 |
| 81.139.77.79 | 1368083791 | 0 |
| 81.139.77.80 | 1368083792 | 0 |
| 81.139.77.81 | 1368083793 | 0 |
| 81.139.77.82 | 1368083794 | 0 |
| 81.139.77.83 | 1368083795 | 0 |
| 81.139.77.84 | 1368083796 | 0 |
| 81.139.77.85 | 1368083797 | 0 |