Die IP-Adresse 138.91.81 erfolgt über Microsoft Corporation, es hat gehören zu den GGDV (Classless Inter-Domain Routing) 138.91.0.0/16 (Bereich 138.91.0.0, 138.91.255.255). Die autonomen Systemnummer (ASN) ist 8075.
| ASN | 8075 |
| Ausgehend von IP | 138.91.0.0 |
| Beendigung durch IP | 138.91.255.255 |
| ASN-Namen | Microsoft Corporation |
| GGDV | 138.91.0.0/16 |
| Numerische IP | |
| Registrierung | lacnic |
| Letztes update | 09.05.2019 |

| Vorwahl des Landes | Land | Region | Stadt | Breitengrad | Länge | Letztes update | |
| IP2Location | US | USA | - | Washington | 38,7135 | -78,1594 | 2019-05-08 |
| MaxMind | US | USA | - | Boydton | 36,6676 | -78,3875 | 2019-05-08 |
| Whois | BR | - | - | - | -52 | -14 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 138.91.81.0 | 2321240320 | 0 |
| 138.91.81.1 | 2321240321 | 0 |
| 138.91.81.2 | 2321240322 | 0 |
| 138.91.81.3 | 2321240323 | 0 |
| 138.91.81.4 | 2321240324 | 0 |
| 138.91.81.5 | 2321240325 | 0 |
| 138.91.81.6 | 2321240326 | 0 |
| 138.91.81.7 | 2321240327 | 0 |
| 138.91.81.8 | 2321240328 | 0 |
| 138.91.81.9 | 2321240329 | 0 |
| 138.91.81.10 | 2321240330 | 0 |
| 138.91.81.11 | 2321240331 | 0 |
| 138.91.81.12 | 2321240332 | 0 |
| 138.91.81.13 | 2321240333 | 0 |
| 138.91.81.14 | 2321240334 | 0 |
| 138.91.81.15 | 2321240335 | 0 |
| 138.91.81.16 | 2321240336 | 0 |
| 138.91.81.17 | 2321240337 | 0 |
| 138.91.81.18 | 2321240338 | 0 |
| 138.91.81.19 | 2321240339 | 0 |
| 138.91.81.20 | 2321240340 | 0 |
| 138.91.81.21 | 2321240341 | 0 |
| 138.91.81.22 | 2321240342 | 0 |
| 138.91.81.23 | 2321240343 | 0 |
| 138.91.81.24 | 2321240344 | 0 |
| 138.91.81.25 | 2321240345 | 0 |
| 138.91.81.26 | 2321240346 | 0 |
| 138.91.81.27 | 2321240347 | 0 |
| 138.91.81.28 | 2321240348 | 0 |
| 138.91.81.29 | 2321240349 | 0 |
| 138.91.81.30 | 2321240350 | 0 |
| 138.91.81.31 | 2321240351 | 0 |
| 138.91.81.32 | 2321240352 | 0 |
| 138.91.81.33 | 2321240353 | 0 |
| 138.91.81.34 | 2321240354 | 0 |
| 138.91.81.35 | 2321240355 | 0 |
| 138.91.81.36 | 2321240356 | 0 |
| 138.91.81.37 | 2321240357 | 0 |
| 138.91.81.38 | 2321240358 | 0 |
| 138.91.81.39 | 2321240359 | 0 |
| 138.91.81.40 | 2321240360 | 0 |
| 138.91.81.41 | 2321240361 | 0 |
| 138.91.81.42 | 2321240362 | 0 |
| 138.91.81.43 | 2321240363 | 0 |
| 138.91.81.44 | 2321240364 | 0 |
| 138.91.81.45 | 2321240365 | 0 |
| 138.91.81.46 | 2321240366 | 0 |
| 138.91.81.47 | 2321240367 | 0 |
| 138.91.81.48 | 2321240368 | 0 |
| 138.91.81.49 | 2321240369 | 0 |
| 138.91.81.50 | 2321240370 | 0 |
| 138.91.81.51 | 2321240371 | 0 |
| 138.91.81.52 | 2321240372 | 0 |
| 138.91.81.53 | 2321240373 | 0 |
| 138.91.81.54 | 2321240374 | 0 |
| 138.91.81.55 | 2321240375 | 0 |
| 138.91.81.56 | 2321240376 | 0 |
| 138.91.81.57 | 2321240377 | 0 |
| 138.91.81.58 | 2321240378 | 0 |
| 138.91.81.59 | 2321240379 | 0 |
| 138.91.81.60 | 2321240380 | 0 |
| 138.91.81.61 | 2321240381 | 0 |
| 138.91.81.62 | 2321240382 | 0 |
| 138.91.81.63 | 2321240383 | 0 |
| 138.91.81.64 | 2321240384 | 0 |
| 138.91.81.65 | 2321240385 | 0 |
| 138.91.81.66 | 2321240386 | 0 |
| 138.91.81.67 | 2321240387 | 0 |
| 138.91.81.68 | 2321240388 | 0 |
| 138.91.81.69 | 2321240389 | 0 |
| 138.91.81.70 | 2321240390 | 0 |
| 138.91.81.71 | 2321240391 | 0 |
| 138.91.81.72 | 2321240392 | 0 |
| 138.91.81.73 | 2321240393 | 0 |
| 138.91.81.74 | 2321240394 | 0 |
| 138.91.81.75 | 2321240395 | 0 |
| 138.91.81.76 | 2321240396 | 0 |
| 138.91.81.77 | 2321240397 | 0 |
| 138.91.81.78 | 2321240398 | 0 |
| 138.91.81.79 | 2321240399 | 0 |
| 138.91.81.80 | 2321240400 | 0 |
| 138.91.81.81 | 2321240401 | 0 |
| 138.91.81.82 | 2321240402 | 0 |
| 138.91.81.83 | 2321240403 | 0 |
| 138.91.81.84 | 2321240404 | 0 |
| 138.91.81.85 | 2321240405 | 0 |