The IP address 51.91.81 is provided by Microsoft Corporation, it's belong to the CDIR (Classless Inter-Domain Routing) 51.103.0.0/16 (range 51.103.0.0 to 51.103.255.255). The autonomous system number (ASN) is 8075.
| ASN | 8075 |
| IP starting by | 51.103.0.0 |
| IP ending by | 51.103.255.255 |
| ASN Name | Microsoft Corporation |
| CDIR | 51.103.0.0/16 |
| Numerical IP | |
| Registry | ripencc |
| Last update | 11/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | GB | United Kingdom | - | Warrington | 52.1845 | -0.6876 | 2017-08-11 |
| MaxMind | GB | United Kingdom | - | - | 51.4964 | -0.1224 | 2017-08-11 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 51.91.81.0 | 861622528 | 0 |
| 51.91.81.1 | 861622529 | 0 |
| 51.91.81.2 | 861622530 | 0 |
| 51.91.81.3 | 861622531 | 0 |
| 51.91.81.4 | 861622532 | 0 |
| 51.91.81.5 | 861622533 | 0 |
| 51.91.81.6 | 861622534 | 0 |
| 51.91.81.7 | 861622535 | 0 |
| 51.91.81.8 | 861622536 | 0 |
| 51.91.81.9 | 861622537 | 0 |
| 51.91.81.10 | 861622538 | 0 |
| 51.91.81.11 | 861622539 | 0 |
| 51.91.81.12 | 861622540 | 0 |
| 51.91.81.13 | 861622541 | 0 |
| 51.91.81.14 | 861622542 | 0 |
| 51.91.81.15 | 861622543 | 0 |
| 51.91.81.16 | 861622544 | 0 |
| 51.91.81.17 | 861622545 | 0 |
| 51.91.81.18 | 861622546 | 0 |
| 51.91.81.19 | 861622547 | 0 |
| 51.91.81.20 | 861622548 | 0 |
| 51.91.81.21 | 861622549 | 0 |
| 51.91.81.22 | 861622550 | 0 |
| 51.91.81.23 | 861622551 | 0 |
| 51.91.81.24 | 861622552 | 0 |
| 51.91.81.25 | 861622553 | 0 |
| 51.91.81.26 | 861622554 | 0 |
| 51.91.81.27 | 861622555 | 0 |
| 51.91.81.28 | 861622556 | 0 |
| 51.91.81.29 | 861622557 | 0 |
| 51.91.81.30 | 861622558 | 0 |
| 51.91.81.31 | 861622559 | 0 |
| 51.91.81.32 | 861622560 | 0 |
| 51.91.81.33 | 861622561 | 0 |
| 51.91.81.34 | 861622562 | 0 |
| 51.91.81.35 | 861622563 | 0 |
| 51.91.81.36 | 861622564 | 0 |
| 51.91.81.37 | 861622565 | 0 |
| 51.91.81.38 | 861622566 | 0 |
| 51.91.81.39 | 861622567 | 0 |
| 51.91.81.40 | 861622568 | 0 |
| 51.91.81.41 | 861622569 | 0 |
| 51.91.81.42 | 861622570 | 0 |
| 51.91.81.43 | 861622571 | 0 |
| 51.91.81.44 | 861622572 | 0 |
| 51.91.81.45 | 861622573 | 0 |
| 51.91.81.46 | 861622574 | 0 |
| 51.91.81.47 | 861622575 | 0 |
| 51.91.81.48 | 861622576 | 0 |
| 51.91.81.49 | 861622577 | 0 |
| 51.91.81.50 | 861622578 | 0 |
| 51.91.81.51 | 861622579 | 0 |
| 51.91.81.52 | 861622580 | 0 |
| 51.91.81.53 | 861622581 | 0 |
| 51.91.81.54 | 861622582 | 0 |
| 51.91.81.55 | 861622583 | 0 |
| 51.91.81.56 | 861622584 | 0 |
| 51.91.81.57 | 861622585 | 0 |
| 51.91.81.58 | 861622586 | 0 |
| 51.91.81.59 | 861622587 | 0 |
| 51.91.81.60 | 861622588 | 0 |
| 51.91.81.61 | 861622589 | 0 |
| 51.91.81.62 | 861622590 | 0 |
| 51.91.81.63 | 861622591 | 0 |
| 51.91.81.64 | 861622592 | 0 |
| 51.91.81.65 | 861622593 | 0 |
| 51.91.81.66 | 861622594 | 0 |
| 51.91.81.67 | 861622595 | 0 |
| 51.91.81.68 | 861622596 | 0 |
| 51.91.81.69 | 861622597 | 0 |
| 51.91.81.70 | 861622598 | 0 |
| 51.91.81.71 | 861622599 | 0 |
| 51.91.81.72 | 861622600 | 0 |
| 51.91.81.73 | 861622601 | 0 |
| 51.91.81.74 | 861622602 | 0 |
| 51.91.81.75 | 861622603 | 0 |
| 51.91.81.76 | 861622604 | 0 |
| 51.91.81.77 | 861622605 | 0 |
| 51.91.81.78 | 861622606 | 0 |
| 51.91.81.79 | 861622607 | 0 |
| 51.91.81.80 | 861622608 | 0 |
| 51.91.81.81 | 861622609 | 0 |
| 51.91.81.82 | 861622610 | 0 |
| 51.91.81.83 | 861622611 | 0 |
| 51.91.81.84 | 861622612 | 0 |
| 51.91.81.85 | 861622613 | 0 |