La dirección IP 51.16.21 es proporcionada por Microsoft Corporation, que es propiedad de la CIDR (Classless Inter-Domain Routing) 51.18.0.0/16, IP entre 51.18.0.0 a 51.18.255.255 ). El número de sistema autónomo (ASN) es 8075.
| ASN | 8075 |
| IP que comienzan con | 51.18.0.0 |
| IP que termina con | 51.18.255.255 |
| ASN Nombre | Microsoft Corporation |
| CDIR | 51.18.0.0/16 |
| IP numérica | |
| Registe | lacnic |
| Última actualización | 15/07/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | GB | Reino Unido | - | Warrington | 52,1845 | -0,6876 | 2017-07-15 |
| MaxMind | GB | Reino Unido | - | - | 51,4964 | -0,1224 | 2017-07-15 |
| Whois | BR | - | - | - | -52 | -14 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 51.16.21.0 | 856691968 | 0 |
| 51.16.21.1 | 856691969 | 0 |
| 51.16.21.2 | 856691970 | 0 |
| 51.16.21.3 | 856691971 | 0 |
| 51.16.21.4 | 856691972 | 0 |
| 51.16.21.5 | 856691973 | 0 |
| 51.16.21.6 | 856691974 | 0 |
| 51.16.21.7 | 856691975 | 0 |
| 51.16.21.8 | 856691976 | 0 |
| 51.16.21.9 | 856691977 | 0 |
| 51.16.21.10 | 856691978 | 0 |
| 51.16.21.11 | 856691979 | 0 |
| 51.16.21.12 | 856691980 | 0 |
| 51.16.21.13 | 856691981 | 0 |
| 51.16.21.14 | 856691982 | 0 |
| 51.16.21.15 | 856691983 | 0 |
| 51.16.21.16 | 856691984 | 0 |
| 51.16.21.17 | 856691985 | 0 |
| 51.16.21.18 | 856691986 | 0 |
| 51.16.21.19 | 856691987 | 0 |
| 51.16.21.20 | 856691988 | 0 |
| 51.16.21.21 | 856691989 | 0 |
| 51.16.21.22 | 856691990 | 0 |
| 51.16.21.23 | 856691991 | 0 |
| 51.16.21.24 | 856691992 | 0 |
| 51.16.21.25 | 856691993 | 0 |
| 51.16.21.26 | 856691994 | 0 |
| 51.16.21.27 | 856691995 | 0 |
| 51.16.21.28 | 856691996 | 0 |
| 51.16.21.29 | 856691997 | 0 |
| 51.16.21.30 | 856691998 | 0 |
| 51.16.21.31 | 856691999 | 0 |
| 51.16.21.32 | 856692000 | 0 |
| 51.16.21.33 | 856692001 | 0 |
| 51.16.21.34 | 856692002 | 0 |
| 51.16.21.35 | 856692003 | 0 |
| 51.16.21.36 | 856692004 | 0 |
| 51.16.21.37 | 856692005 | 0 |
| 51.16.21.38 | 856692006 | 0 |
| 51.16.21.39 | 856692007 | 0 |
| 51.16.21.40 | 856692008 | 0 |
| 51.16.21.41 | 856692009 | 0 |
| 51.16.21.42 | 856692010 | 0 |
| 51.16.21.43 | 856692011 | 0 |
| 51.16.21.44 | 856692012 | 0 |
| 51.16.21.45 | 856692013 | 0 |
| 51.16.21.46 | 856692014 | 0 |
| 51.16.21.47 | 856692015 | 0 |
| 51.16.21.48 | 856692016 | 0 |
| 51.16.21.49 | 856692017 | 0 |
| 51.16.21.50 | 856692018 | 0 |
| 51.16.21.51 | 856692019 | 0 |
| 51.16.21.52 | 856692020 | 0 |
| 51.16.21.53 | 856692021 | 0 |
| 51.16.21.54 | 856692022 | 0 |
| 51.16.21.55 | 856692023 | 0 |
| 51.16.21.56 | 856692024 | 0 |
| 51.16.21.57 | 856692025 | 0 |
| 51.16.21.58 | 856692026 | 0 |
| 51.16.21.59 | 856692027 | 0 |
| 51.16.21.60 | 856692028 | 0 |
| 51.16.21.61 | 856692029 | 0 |
| 51.16.21.62 | 856692030 | 0 |
| 51.16.21.63 | 856692031 | 0 |
| 51.16.21.64 | 856692032 | 0 |
| 51.16.21.65 | 856692033 | 0 |
| 51.16.21.66 | 856692034 | 0 |
| 51.16.21.67 | 856692035 | 0 |
| 51.16.21.68 | 856692036 | 0 |
| 51.16.21.69 | 856692037 | 0 |
| 51.16.21.70 | 856692038 | 0 |
| 51.16.21.71 | 856692039 | 0 |
| 51.16.21.72 | 856692040 | 0 |
| 51.16.21.73 | 856692041 | 0 |
| 51.16.21.74 | 856692042 | 0 |
| 51.16.21.75 | 856692043 | 0 |
| 51.16.21.76 | 856692044 | 0 |
| 51.16.21.77 | 856692045 | 0 |
| 51.16.21.78 | 856692046 | 0 |
| 51.16.21.79 | 856692047 | 0 |
| 51.16.21.80 | 856692048 | 0 |
| 51.16.21.81 | 856692049 | 0 |
| 51.16.21.82 | 856692050 | 0 |
| 51.16.21.83 | 856692051 | 0 |
| 51.16.21.84 | 856692052 | 0 |
| 51.16.21.85 | 856692053 | 0 |