La dirección IP 21.90.57 es proporcionada por China Education and Research Network Center, que es propiedad de la CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP entre 22.30.204.0 a 22.30.205.255 ). El número de sistema autónomo (ASN) es 4538.
| ASN | 4538 |
| IP que comienzan con | 22.30.204.0 |
| IP que termina con | 22.30.205.255 |
| ASN Nombre | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérica | |
| Registe | |
| Última actualización | 21/01/2019 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Houston | 29,7633 | -95,3633 | 2019-01-20 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2019-01-20 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.90.57.0 | 358234368 | 0 |
| 21.90.57.1 | 358234369 | 0 |
| 21.90.57.2 | 358234370 | 0 |
| 21.90.57.3 | 358234371 | 0 |
| 21.90.57.4 | 358234372 | 0 |
| 21.90.57.5 | 358234373 | 0 |
| 21.90.57.6 | 358234374 | 0 |
| 21.90.57.7 | 358234375 | 0 |
| 21.90.57.8 | 358234376 | 0 |
| 21.90.57.9 | 358234377 | 0 |
| 21.90.57.10 | 358234378 | 0 |
| 21.90.57.11 | 358234379 | 0 |
| 21.90.57.12 | 358234380 | 0 |
| 21.90.57.13 | 358234381 | 0 |
| 21.90.57.14 | 358234382 | 0 |
| 21.90.57.15 | 358234383 | 0 |
| 21.90.57.16 | 358234384 | 0 |
| 21.90.57.17 | 358234385 | 0 |
| 21.90.57.18 | 358234386 | 0 |
| 21.90.57.19 | 358234387 | 0 |
| 21.90.57.20 | 358234388 | 0 |
| 21.90.57.21 | 358234389 | 0 |
| 21.90.57.22 | 358234390 | 0 |
| 21.90.57.23 | 358234391 | 0 |
| 21.90.57.24 | 358234392 | 0 |
| 21.90.57.25 | 358234393 | 0 |
| 21.90.57.26 | 358234394 | 0 |
| 21.90.57.27 | 358234395 | 0 |
| 21.90.57.28 | 358234396 | 0 |
| 21.90.57.29 | 358234397 | 0 |
| 21.90.57.30 | 358234398 | 0 |
| 21.90.57.31 | 358234399 | 0 |
| 21.90.57.32 | 358234400 | 0 |
| 21.90.57.33 | 358234401 | 0 |
| 21.90.57.34 | 358234402 | 0 |
| 21.90.57.35 | 358234403 | 0 |
| 21.90.57.36 | 358234404 | 0 |
| 21.90.57.37 | 358234405 | 0 |
| 21.90.57.38 | 358234406 | 0 |
| 21.90.57.39 | 358234407 | 0 |
| 21.90.57.40 | 358234408 | 0 |
| 21.90.57.41 | 358234409 | 0 |
| 21.90.57.42 | 358234410 | 0 |
| 21.90.57.43 | 358234411 | 0 |
| 21.90.57.44 | 358234412 | 0 |
| 21.90.57.45 | 358234413 | 0 |
| 21.90.57.46 | 358234414 | 0 |
| 21.90.57.47 | 358234415 | 0 |
| 21.90.57.48 | 358234416 | 0 |
| 21.90.57.49 | 358234417 | 0 |
| 21.90.57.50 | 358234418 | 0 |
| 21.90.57.51 | 358234419 | 0 |
| 21.90.57.52 | 358234420 | 0 |
| 21.90.57.53 | 358234421 | 0 |
| 21.90.57.54 | 358234422 | 0 |
| 21.90.57.55 | 358234423 | 0 |
| 21.90.57.56 | 358234424 | 0 |
| 21.90.57.57 | 358234425 | 0 |
| 21.90.57.58 | 358234426 | 0 |
| 21.90.57.59 | 358234427 | 0 |
| 21.90.57.60 | 358234428 | 0 |
| 21.90.57.61 | 358234429 | 0 |
| 21.90.57.62 | 358234430 | 0 |
| 21.90.57.63 | 358234431 | 0 |
| 21.90.57.64 | 358234432 | 0 |
| 21.90.57.65 | 358234433 | 0 |
| 21.90.57.66 | 358234434 | 0 |
| 21.90.57.67 | 358234435 | 0 |
| 21.90.57.68 | 358234436 | 0 |
| 21.90.57.69 | 358234437 | 0 |
| 21.90.57.70 | 358234438 | 0 |
| 21.90.57.71 | 358234439 | 0 |
| 21.90.57.72 | 358234440 | 0 |
| 21.90.57.73 | 358234441 | 0 |
| 21.90.57.74 | 358234442 | 0 |
| 21.90.57.75 | 358234443 | 0 |
| 21.90.57.76 | 358234444 | 0 |
| 21.90.57.77 | 358234445 | 0 |
| 21.90.57.78 | 358234446 | 0 |
| 21.90.57.79 | 358234447 | 0 |
| 21.90.57.80 | 358234448 | 0 |
| 21.90.57.81 | 358234449 | 0 |
| 21.90.57.82 | 358234450 | 0 |
| 21.90.57.83 | 358234451 | 0 |
| 21.90.57.84 | 358234452 | 0 |
| 21.90.57.85 | 358234453 | 0 |