Les adresses IP débutant par 81.157.54 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 | 16/09/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | GB | Royaume-Uni | - | Melrose | 55,5997 | -2,7277 | 2017-09-16 |
| MaxMind | GB | Royaume-Uni | - | Poplar | 51,5 | -0,0167 | 2017-09-16 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.157.54.0 | 1369257472 | 0 |
| 81.157.54.1 | 1369257473 | 0 |
| 81.157.54.2 | 1369257474 | 0 |
| 81.157.54.3 | 1369257475 | 0 |
| 81.157.54.4 | 1369257476 | 0 |
| 81.157.54.5 | 1369257477 | 0 |
| 81.157.54.6 | 1369257478 | 0 |
| 81.157.54.7 | 1369257479 | 0 |
| 81.157.54.8 | 1369257480 | 0 |
| 81.157.54.9 | 1369257481 | 0 |
| 81.157.54.10 | 1369257482 | 0 |
| 81.157.54.11 | 1369257483 | 0 |
| 81.157.54.12 | 1369257484 | 0 |
| 81.157.54.13 | 1369257485 | 0 |
| 81.157.54.14 | 1369257486 | 0 |
| 81.157.54.15 | 1369257487 | 0 |
| 81.157.54.16 | 1369257488 | 0 |
| 81.157.54.17 | 1369257489 | 0 |
| 81.157.54.18 | 1369257490 | 0 |
| 81.157.54.19 | 1369257491 | 0 |
| 81.157.54.20 | 1369257492 | 0 |
| 81.157.54.21 | 1369257493 | 0 |
| 81.157.54.22 | 1369257494 | 0 |
| 81.157.54.23 | 1369257495 | 0 |
| 81.157.54.24 | 1369257496 | 0 |
| 81.157.54.25 | 1369257497 | 0 |
| 81.157.54.26 | 1369257498 | 0 |
| 81.157.54.27 | 1369257499 | 0 |
| 81.157.54.28 | 1369257500 | 0 |
| 81.157.54.29 | 1369257501 | 0 |
| 81.157.54.30 | 1369257502 | 0 |
| 81.157.54.31 | 1369257503 | 0 |
| 81.157.54.32 | 1369257504 | 0 |
| 81.157.54.33 | 1369257505 | 0 |
| 81.157.54.34 | 1369257506 | 0 |
| 81.157.54.35 | 1369257507 | 0 |
| 81.157.54.36 | 1369257508 | 0 |
| 81.157.54.37 | 1369257509 | 0 |
| 81.157.54.38 | 1369257510 | 0 |
| 81.157.54.39 | 1369257511 | 0 |
| 81.157.54.40 | 1369257512 | 0 |
| 81.157.54.41 | 1369257513 | 0 |
| 81.157.54.42 | 1369257514 | 0 |
| 81.157.54.43 | 1369257515 | 0 |
| 81.157.54.44 | 1369257516 | 0 |
| 81.157.54.45 | 1369257517 | 0 |
| 81.157.54.46 | 1369257518 | 0 |
| 81.157.54.47 | 1369257519 | 0 |
| 81.157.54.48 | 1369257520 | 0 |
| 81.157.54.49 | 1369257521 | 0 |
| 81.157.54.50 | 1369257522 | 0 |
| 81.157.54.51 | 1369257523 | 0 |
| 81.157.54.52 | 1369257524 | 0 |
| 81.157.54.53 | 1369257525 | 0 |
| 81.157.54.54 | 1369257526 | 0 |
| 81.157.54.55 | 1369257527 | 0 |
| 81.157.54.56 | 1369257528 | 0 |
| 81.157.54.57 | 1369257529 | 0 |
| 81.157.54.58 | 1369257530 | 0 |
| 81.157.54.59 | 1369257531 | 0 |
| 81.157.54.60 | 1369257532 | 0 |
| 81.157.54.61 | 1369257533 | 0 |
| 81.157.54.62 | 1369257534 | 0 |
| 81.157.54.63 | 1369257535 | 0 |
| 81.157.54.64 | 1369257536 | 0 |
| 81.157.54.65 | 1369257537 | 0 |
| 81.157.54.66 | 1369257538 | 0 |
| 81.157.54.67 | 1369257539 | 0 |
| 81.157.54.68 | 1369257540 | 0 |
| 81.157.54.69 | 1369257541 | 0 |
| 81.157.54.70 | 1369257542 | 0 |
| 81.157.54.71 | 1369257543 | 0 |
| 81.157.54.72 | 1369257544 | 0 |
| 81.157.54.73 | 1369257545 | 0 |
| 81.157.54.74 | 1369257546 | 0 |
| 81.157.54.75 | 1369257547 | 0 |
| 81.157.54.76 | 1369257548 | 0 |
| 81.157.54.77 | 1369257549 | 0 |
| 81.157.54.78 | 1369257550 | 0 |
| 81.157.54.79 | 1369257551 | 0 |
| 81.157.54.80 | 1369257552 | 0 |
| 81.157.54.81 | 1369257553 | 0 |
| 81.157.54.82 | 1369257554 | 0 |
| 81.157.54.83 | 1369257555 | 0 |
| 81.157.54.84 | 1369257556 | 0 |
| 81.157.54.85 | 1369257557 | 0 |