Les adresses IP débutant par 131.78.21 sont fournies par DoD Network Information Center, elles appartiennent au CIDR (Classless Inter-Domain Routing) 131.76.0.0/14, le bloc IP comprant les adresses de 131.76.0.0 à 131.79.255.255). Le numéro de système autonome (ASN) est 721.
| ASN | 721 |
| IP commençant par | 131.76.0.0 |
| IP se terminant par | 131.79.255.255 |
| Nom ASN | DoD Network Information Center |
| CDIR | 131.76.0.0/14 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 31/03/2020 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Arlington | 38,881 | -77,1043 | 2020-03-31 |
| MaxMind | US | États-Unis | - | Woodbridge | 38,6257 | -77,2665 | 2020-03-31 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 131.78.21.0 | 2202932480 | 0 |
| 131.78.21.1 | 2202932481 | 0 |
| 131.78.21.2 | 2202932482 | 0 |
| 131.78.21.3 | 2202932483 | 0 |
| 131.78.21.4 | 2202932484 | 0 |
| 131.78.21.5 | 2202932485 | 0 |
| 131.78.21.6 | 2202932486 | 0 |
| 131.78.21.7 | 2202932487 | 0 |
| 131.78.21.8 | 2202932488 | 0 |
| 131.78.21.9 | 2202932489 | 0 |
| 131.78.21.10 | 2202932490 | 0 |
| 131.78.21.11 | 2202932491 | 0 |
| 131.78.21.12 | 2202932492 | 0 |
| 131.78.21.13 | 2202932493 | 0 |
| 131.78.21.14 | 2202932494 | 0 |
| 131.78.21.15 | 2202932495 | 0 |
| 131.78.21.16 | 2202932496 | 0 |
| 131.78.21.17 | 2202932497 | 0 |
| 131.78.21.18 | 2202932498 | 0 |
| 131.78.21.19 | 2202932499 | 0 |
| 131.78.21.20 | 2202932500 | 0 |
| 131.78.21.21 | 2202932501 | 0 |
| 131.78.21.22 | 2202932502 | 0 |
| 131.78.21.23 | 2202932503 | 0 |
| 131.78.21.24 | 2202932504 | 0 |
| 131.78.21.25 | 2202932505 | 0 |
| 131.78.21.26 | 2202932506 | 0 |
| 131.78.21.27 | 2202932507 | 0 |
| 131.78.21.28 | 2202932508 | 0 |
| 131.78.21.29 | 2202932509 | 0 |
| 131.78.21.30 | 2202932510 | 0 |
| 131.78.21.31 | 2202932511 | 0 |
| 131.78.21.32 | 2202932512 | 0 |
| 131.78.21.33 | 2202932513 | 0 |
| 131.78.21.34 | 2202932514 | 0 |
| 131.78.21.35 | 2202932515 | 0 |
| 131.78.21.36 | 2202932516 | 0 |
| 131.78.21.37 | 2202932517 | 0 |
| 131.78.21.38 | 2202932518 | 0 |
| 131.78.21.39 | 2202932519 | 0 |
| 131.78.21.40 | 2202932520 | 0 |
| 131.78.21.41 | 2202932521 | 0 |
| 131.78.21.42 | 2202932522 | 0 |
| 131.78.21.43 | 2202932523 | 0 |
| 131.78.21.44 | 2202932524 | 0 |
| 131.78.21.45 | 2202932525 | 0 |
| 131.78.21.46 | 2202932526 | 0 |
| 131.78.21.47 | 2202932527 | 0 |
| 131.78.21.48 | 2202932528 | 0 |
| 131.78.21.49 | 2202932529 | 0 |
| 131.78.21.50 | 2202932530 | 0 |
| 131.78.21.51 | 2202932531 | 0 |
| 131.78.21.52 | 2202932532 | 0 |
| 131.78.21.53 | 2202932533 | 0 |
| 131.78.21.54 | 2202932534 | 0 |
| 131.78.21.55 | 2202932535 | 0 |
| 131.78.21.56 | 2202932536 | 0 |
| 131.78.21.57 | 2202932537 | 0 |
| 131.78.21.58 | 2202932538 | 0 |
| 131.78.21.59 | 2202932539 | 0 |
| 131.78.21.60 | 2202932540 | 0 |
| 131.78.21.61 | 2202932541 | 0 |
| 131.78.21.62 | 2202932542 | 0 |
| 131.78.21.63 | 2202932543 | 0 |
| 131.78.21.64 | 2202932544 | 0 |
| 131.78.21.65 | 2202932545 | 0 |
| 131.78.21.66 | 2202932546 | 0 |
| 131.78.21.67 | 2202932547 | 0 |
| 131.78.21.68 | 2202932548 | 0 |
| 131.78.21.69 | 2202932549 | 0 |
| 131.78.21.70 | 2202932550 | 0 |
| 131.78.21.71 | 2202932551 | 0 |
| 131.78.21.72 | 2202932552 | 0 |
| 131.78.21.73 | 2202932553 | 0 |
| 131.78.21.74 | 2202932554 | 0 |
| 131.78.21.75 | 2202932555 | 0 |
| 131.78.21.76 | 2202932556 | 0 |
| 131.78.21.77 | 2202932557 | 0 |
| 131.78.21.78 | 2202932558 | 0 |
| 131.78.21.79 | 2202932559 | 0 |
| 131.78.21.80 | 2202932560 | 0 |
| 131.78.21.81 | 2202932561 | 0 |
| 131.78.21.82 | 2202932562 | 0 |
| 131.78.21.83 | 2202932563 | 0 |
| 131.78.21.84 | 2202932564 | 0 |
| 131.78.21.85 | 2202932565 | 0 |