La dirección IP 51.81.81 es proporcionada por Microsoft Corporation, que es propiedad de la CIDR (Classless Inter-Domain Routing) 51.103.0.0/16, IP entre 51.103.0.0 a 51.103.255.255 ). El número de sistema autónomo (ASN) es 8075.
| ASN | 8075 |
| IP que comienzan con | 51.103.0.0 |
| IP que termina con | 51.103.255.255 |
| ASN Nombre | Microsoft Corporation |
| CDIR | 51.103.0.0/16 |
| IP numérica | |
| Registe | arin |
| Última actualización | 15/05/2019 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | GB | Reino Unido | - | London | 51,5085 | -0,1257 | 2019-05-15 |
| MaxMind | GB | Reino Unido | - | - | 51,4964 | -0,1224 | 2019-05-15 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 51.81.81.0 | 860967168 | 0 |
| 51.81.81.1 | 860967169 | 0 |
| 51.81.81.2 | 860967170 | 0 |
| 51.81.81.3 | 860967171 | 0 |
| 51.81.81.4 | 860967172 | 0 |
| 51.81.81.5 | 860967173 | 0 |
| 51.81.81.6 | 860967174 | 0 |
| 51.81.81.7 | 860967175 | 0 |
| 51.81.81.8 | 860967176 | 0 |
| 51.81.81.9 | 860967177 | 0 |
| 51.81.81.10 | 860967178 | 0 |
| 51.81.81.11 | 860967179 | 0 |
| 51.81.81.12 | 860967180 | 0 |
| 51.81.81.13 | 860967181 | 0 |
| 51.81.81.14 | 860967182 | 0 |
| 51.81.81.15 | 860967183 | 0 |
| 51.81.81.16 | 860967184 | 0 |
| 51.81.81.17 | 860967185 | 0 |
| 51.81.81.18 | 860967186 | 0 |
| 51.81.81.19 | 860967187 | 0 |
| 51.81.81.20 | 860967188 | 0 |
| 51.81.81.21 | 860967189 | 0 |
| 51.81.81.22 | 860967190 | 0 |
| 51.81.81.23 | 860967191 | 0 |
| 51.81.81.24 | 860967192 | 0 |
| 51.81.81.25 | 860967193 | 0 |
| 51.81.81.26 | 860967194 | 0 |
| 51.81.81.27 | 860967195 | 0 |
| 51.81.81.28 | 860967196 | 0 |
| 51.81.81.29 | 860967197 | 0 |
| 51.81.81.30 | 860967198 | 0 |
| 51.81.81.31 | 860967199 | 0 |
| 51.81.81.32 | 860967200 | 0 |
| 51.81.81.33 | 860967201 | 0 |
| 51.81.81.34 | 860967202 | 0 |
| 51.81.81.35 | 860967203 | 0 |
| 51.81.81.36 | 860967204 | 0 |
| 51.81.81.37 | 860967205 | 0 |
| 51.81.81.38 | 860967206 | 0 |
| 51.81.81.39 | 860967207 | 0 |
| 51.81.81.40 | 860967208 | 0 |
| 51.81.81.41 | 860967209 | 0 |
| 51.81.81.42 | 860967210 | 0 |
| 51.81.81.43 | 860967211 | 0 |
| 51.81.81.44 | 860967212 | 0 |
| 51.81.81.45 | 860967213 | 0 |
| 51.81.81.46 | 860967214 | 0 |
| 51.81.81.47 | 860967215 | 0 |
| 51.81.81.48 | 860967216 | 0 |
| 51.81.81.49 | 860967217 | 0 |
| 51.81.81.50 | 860967218 | 0 |
| 51.81.81.51 | 860967219 | 0 |
| 51.81.81.52 | 860967220 | 0 |
| 51.81.81.53 | 860967221 | 0 |
| 51.81.81.54 | 860967222 | 0 |
| 51.81.81.55 | 860967223 | 0 |
| 51.81.81.56 | 860967224 | 0 |
| 51.81.81.57 | 860967225 | 0 |
| 51.81.81.58 | 860967226 | 0 |
| 51.81.81.59 | 860967227 | 0 |
| 51.81.81.60 | 860967228 | 0 |
| 51.81.81.61 | 860967229 | 0 |
| 51.81.81.62 | 860967230 | 0 |
| 51.81.81.63 | 860967231 | 0 |
| 51.81.81.64 | 860967232 | 0 |
| 51.81.81.65 | 860967233 | 0 |
| 51.81.81.66 | 860967234 | 0 |
| 51.81.81.67 | 860967235 | 0 |
| 51.81.81.68 | 860967236 | 0 |
| 51.81.81.69 | 860967237 | 0 |
| 51.81.81.70 | 860967238 | 0 |
| 51.81.81.71 | 860967239 | 0 |
| 51.81.81.72 | 860967240 | 0 |
| 51.81.81.73 | 860967241 | 0 |
| 51.81.81.74 | 860967242 | 0 |
| 51.81.81.75 | 860967243 | 0 |
| 51.81.81.76 | 860967244 | 0 |
| 51.81.81.77 | 860967245 | 0 |
| 51.81.81.78 | 860967246 | 0 |
| 51.81.81.79 | 860967247 | 0 |
| 51.81.81.80 | 860967248 | 0 |
| 51.81.81.81 | 860967249 | 0 |
| 51.81.81.82 | 860967250 | 0 |
| 51.81.81.83 | 860967251 | 0 |
| 51.81.81.84 | 860967252 | 0 |
| 51.81.81.85 | 860967253 | 0 |