The IP address 81.77.136 is provided by UK Backbone Network, it's belong to the CDIR (Classless Inter-Domain Routing) 81.76.0.0/14 (range 81.76.0.0 to 81.79.255.255). The autonomous system number (ASN) is 5388.
| ASN | 5388 |
| IP starting by | 81.76.0.0 |
| IP ending by | 81.79.255.255 |
| ASN Name | UK Backbone Network |
| CDIR | 81.76.0.0/14 |
| Numerical IP | |
| Registry | ripencc |
| Last update | 11/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | GB | United Kingdom | - | Leeds | 51.2468 | 0.6068 | 2017-07-03 |
| MaxMind | GB | United Kingdom | - | - | 51.4964 | -0.1224 | 2017-07-03 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.77.136.0 | 1364035584 | 0 |
| 81.77.136.1 | 1364035585 | 0 |
| 81.77.136.2 | 1364035586 | 0 |
| 81.77.136.3 | 1364035587 | 0 |
| 81.77.136.4 | 1364035588 | 0 |
| 81.77.136.5 | 1364035589 | 0 |
| 81.77.136.6 | 1364035590 | 0 |
| 81.77.136.7 | 1364035591 | 0 |
| 81.77.136.8 | 1364035592 | 0 |
| 81.77.136.9 | 1364035593 | 0 |
| 81.77.136.10 | 1364035594 | 0 |
| 81.77.136.11 | 1364035595 | 0 |
| 81.77.136.12 | 1364035596 | 0 |
| 81.77.136.13 | 1364035597 | 0 |
| 81.77.136.14 | 1364035598 | 0 |
| 81.77.136.15 | 1364035599 | 0 |
| 81.77.136.16 | 1364035600 | 0 |
| 81.77.136.17 | 1364035601 | 0 |
| 81.77.136.18 | 1364035602 | 0 |
| 81.77.136.19 | 1364035603 | 0 |
| 81.77.136.20 | 1364035604 | 0 |
| 81.77.136.21 | 1364035605 | 0 |
| 81.77.136.22 | 1364035606 | 0 |
| 81.77.136.23 | 1364035607 | 0 |
| 81.77.136.24 | 1364035608 | 0 |
| 81.77.136.25 | 1364035609 | 0 |
| 81.77.136.26 | 1364035610 | 0 |
| 81.77.136.27 | 1364035611 | 0 |
| 81.77.136.28 | 1364035612 | 0 |
| 81.77.136.29 | 1364035613 | 0 |
| 81.77.136.30 | 1364035614 | 0 |
| 81.77.136.31 | 1364035615 | 0 |
| 81.77.136.32 | 1364035616 | 0 |
| 81.77.136.33 | 1364035617 | 0 |
| 81.77.136.34 | 1364035618 | 0 |
| 81.77.136.35 | 1364035619 | 0 |
| 81.77.136.36 | 1364035620 | 0 |
| 81.77.136.37 | 1364035621 | 0 |
| 81.77.136.38 | 1364035622 | 0 |
| 81.77.136.39 | 1364035623 | 0 |
| 81.77.136.40 | 1364035624 | 0 |
| 81.77.136.41 | 1364035625 | 0 |
| 81.77.136.42 | 1364035626 | 0 |
| 81.77.136.43 | 1364035627 | 0 |
| 81.77.136.44 | 1364035628 | 0 |
| 81.77.136.45 | 1364035629 | 0 |
| 81.77.136.46 | 1364035630 | 0 |
| 81.77.136.47 | 1364035631 | 0 |
| 81.77.136.48 | 1364035632 | 0 |
| 81.77.136.49 | 1364035633 | 0 |
| 81.77.136.50 | 1364035634 | 0 |
| 81.77.136.51 | 1364035635 | 0 |
| 81.77.136.52 | 1364035636 | 0 |
| 81.77.136.53 | 1364035637 | 0 |
| 81.77.136.54 | 1364035638 | 0 |
| 81.77.136.55 | 1364035639 | 0 |
| 81.77.136.56 | 1364035640 | 0 |
| 81.77.136.57 | 1364035641 | 0 |
| 81.77.136.58 | 1364035642 | 0 |
| 81.77.136.59 | 1364035643 | 0 |
| 81.77.136.60 | 1364035644 | 0 |
| 81.77.136.61 | 1364035645 | 0 |
| 81.77.136.62 | 1364035646 | 0 |
| 81.77.136.63 | 1364035647 | 0 |
| 81.77.136.64 | 1364035648 | 0 |
| 81.77.136.65 | 1364035649 | 0 |
| 81.77.136.66 | 1364035650 | 0 |
| 81.77.136.67 | 1364035651 | 0 |
| 81.77.136.68 | 1364035652 | 0 |
| 81.77.136.69 | 1364035653 | 0 |
| 81.77.136.70 | 1364035654 | 0 |
| 81.77.136.71 | 1364035655 | 0 |
| 81.77.136.72 | 1364035656 | 0 |
| 81.77.136.73 | 1364035657 | 0 |
| 81.77.136.74 | 1364035658 | 0 |
| 81.77.136.75 | 1364035659 | 0 |
| 81.77.136.76 | 1364035660 | 0 |
| 81.77.136.77 | 1364035661 | 0 |
| 81.77.136.78 | 1364035662 | 0 |
| 81.77.136.79 | 1364035663 | 0 |
| 81.77.136.80 | 1364035664 | 0 |
| 81.77.136.81 | 1364035665 | 0 |
| 81.77.136.82 | 1364035666 | 0 |
| 81.77.136.83 | 1364035667 | 0 |
| 81.77.136.84 | 1364035668 | 0 |
| 81.77.136.85 | 1364035669 | 0 |