Les adresses IP débutant par 51.40.91 sont fournies par Microsoft Corporation, elles appartiennent au CIDR (Classless Inter-Domain Routing) 51.51.0.0/16, le bloc IP comprant les adresses de 51.51.0.0 à 51.51.255.255). Le numéro de système autonome (ASN) est 8075.
| ASN | 8075 |
| IP commençant par | 51.51.0.0 |
| IP se terminant par | 51.51.255.255 |
| Nom ASN | Microsoft Corporation |
| CDIR | 51.51.0.0/16 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 12/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | GB | Royaume-Uni | - | Warrington | 52,1845 | -0,6876 | 2017-08-12 |
| MaxMind | GB | Royaume-Uni | - | - | 51,4964 | -0,1224 | 2017-08-12 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 51.40.91.0 | 858282752 | 0 |
| 51.40.91.1 | 858282753 | 0 |
| 51.40.91.2 | 858282754 | 0 |
| 51.40.91.3 | 858282755 | 0 |
| 51.40.91.4 | 858282756 | 0 |
| 51.40.91.5 | 858282757 | 0 |
| 51.40.91.6 | 858282758 | 0 |
| 51.40.91.7 | 858282759 | 0 |
| 51.40.91.8 | 858282760 | 0 |
| 51.40.91.9 | 858282761 | 0 |
| 51.40.91.10 | 858282762 | 0 |
| 51.40.91.11 | 858282763 | 0 |
| 51.40.91.12 | 858282764 | 0 |
| 51.40.91.13 | 858282765 | 0 |
| 51.40.91.14 | 858282766 | 0 |
| 51.40.91.15 | 858282767 | 0 |
| 51.40.91.16 | 858282768 | 0 |
| 51.40.91.17 | 858282769 | 0 |
| 51.40.91.18 | 858282770 | 0 |
| 51.40.91.19 | 858282771 | 0 |
| 51.40.91.20 | 858282772 | 0 |
| 51.40.91.21 | 858282773 | 0 |
| 51.40.91.22 | 858282774 | 0 |
| 51.40.91.23 | 858282775 | 0 |
| 51.40.91.24 | 858282776 | 0 |
| 51.40.91.25 | 858282777 | 0 |
| 51.40.91.26 | 858282778 | 0 |
| 51.40.91.27 | 858282779 | 0 |
| 51.40.91.28 | 858282780 | 0 |
| 51.40.91.29 | 858282781 | 0 |
| 51.40.91.30 | 858282782 | 0 |
| 51.40.91.31 | 858282783 | 0 |
| 51.40.91.32 | 858282784 | 0 |
| 51.40.91.33 | 858282785 | 0 |
| 51.40.91.34 | 858282786 | 0 |
| 51.40.91.35 | 858282787 | 0 |
| 51.40.91.36 | 858282788 | 0 |
| 51.40.91.37 | 858282789 | 0 |
| 51.40.91.38 | 858282790 | 0 |
| 51.40.91.39 | 858282791 | 0 |
| 51.40.91.40 | 858282792 | 0 |
| 51.40.91.41 | 858282793 | 0 |
| 51.40.91.42 | 858282794 | 0 |
| 51.40.91.43 | 858282795 | 0 |
| 51.40.91.44 | 858282796 | 0 |
| 51.40.91.45 | 858282797 | 0 |
| 51.40.91.46 | 858282798 | 0 |
| 51.40.91.47 | 858282799 | 0 |
| 51.40.91.48 | 858282800 | 0 |
| 51.40.91.49 | 858282801 | 0 |
| 51.40.91.50 | 858282802 | 0 |
| 51.40.91.51 | 858282803 | 0 |
| 51.40.91.52 | 858282804 | 0 |
| 51.40.91.53 | 858282805 | 0 |
| 51.40.91.54 | 858282806 | 0 |
| 51.40.91.55 | 858282807 | 0 |
| 51.40.91.56 | 858282808 | 0 |
| 51.40.91.57 | 858282809 | 0 |
| 51.40.91.58 | 858282810 | 0 |
| 51.40.91.59 | 858282811 | 0 |
| 51.40.91.60 | 858282812 | 0 |
| 51.40.91.61 | 858282813 | 0 |
| 51.40.91.62 | 858282814 | 0 |
| 51.40.91.63 | 858282815 | 0 |
| 51.40.91.64 | 858282816 | 0 |
| 51.40.91.65 | 858282817 | 0 |
| 51.40.91.66 | 858282818 | 0 |
| 51.40.91.67 | 858282819 | 0 |
| 51.40.91.68 | 858282820 | 0 |
| 51.40.91.69 | 858282821 | 0 |
| 51.40.91.70 | 858282822 | 0 |
| 51.40.91.71 | 858282823 | 0 |
| 51.40.91.72 | 858282824 | 0 |
| 51.40.91.73 | 858282825 | 0 |
| 51.40.91.74 | 858282826 | 0 |
| 51.40.91.75 | 858282827 | 0 |
| 51.40.91.76 | 858282828 | 0 |
| 51.40.91.77 | 858282829 | 0 |
| 51.40.91.78 | 858282830 | 0 |
| 51.40.91.79 | 858282831 | 0 |
| 51.40.91.80 | 858282832 | 0 |
| 51.40.91.81 | 858282833 | 0 |
| 51.40.91.82 | 858282834 | 0 |
| 51.40.91.83 | 858282835 | 0 |
| 51.40.91.84 | 858282836 | 0 |
| 51.40.91.85 | 858282837 | 0 |