La dirección IP 21.83.21 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 | 05/11/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Columbus | 39,9664 | -83,0128 | 2017-11-05 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2017-11-05 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.83.21.0 | 357766400 | 0 |
| 21.83.21.1 | 357766401 | 0 |
| 21.83.21.2 | 357766402 | 0 |
| 21.83.21.3 | 357766403 | 0 |
| 21.83.21.4 | 357766404 | 0 |
| 21.83.21.5 | 357766405 | 0 |
| 21.83.21.6 | 357766406 | 0 |
| 21.83.21.7 | 357766407 | 0 |
| 21.83.21.8 | 357766408 | 0 |
| 21.83.21.9 | 357766409 | 0 |
| 21.83.21.10 | 357766410 | 0 |
| 21.83.21.11 | 357766411 | 0 |
| 21.83.21.12 | 357766412 | 0 |
| 21.83.21.13 | 357766413 | 0 |
| 21.83.21.14 | 357766414 | 0 |
| 21.83.21.15 | 357766415 | 0 |
| 21.83.21.16 | 357766416 | 0 |
| 21.83.21.17 | 357766417 | 0 |
| 21.83.21.18 | 357766418 | 0 |
| 21.83.21.19 | 357766419 | 0 |
| 21.83.21.20 | 357766420 | 0 |
| 21.83.21.21 | 357766421 | 0 |
| 21.83.21.22 | 357766422 | 0 |
| 21.83.21.23 | 357766423 | 0 |
| 21.83.21.24 | 357766424 | 0 |
| 21.83.21.25 | 357766425 | 0 |
| 21.83.21.26 | 357766426 | 0 |
| 21.83.21.27 | 357766427 | 0 |
| 21.83.21.28 | 357766428 | 0 |
| 21.83.21.29 | 357766429 | 0 |
| 21.83.21.30 | 357766430 | 0 |
| 21.83.21.31 | 357766431 | 0 |
| 21.83.21.32 | 357766432 | 0 |
| 21.83.21.33 | 357766433 | 0 |
| 21.83.21.34 | 357766434 | 0 |
| 21.83.21.35 | 357766435 | 0 |
| 21.83.21.36 | 357766436 | 0 |
| 21.83.21.37 | 357766437 | 0 |
| 21.83.21.38 | 357766438 | 0 |
| 21.83.21.39 | 357766439 | 0 |
| 21.83.21.40 | 357766440 | 0 |
| 21.83.21.41 | 357766441 | 0 |
| 21.83.21.42 | 357766442 | 0 |
| 21.83.21.43 | 357766443 | 0 |
| 21.83.21.44 | 357766444 | 0 |
| 21.83.21.45 | 357766445 | 0 |
| 21.83.21.46 | 357766446 | 0 |
| 21.83.21.47 | 357766447 | 0 |
| 21.83.21.48 | 357766448 | 0 |
| 21.83.21.49 | 357766449 | 0 |
| 21.83.21.50 | 357766450 | 0 |
| 21.83.21.51 | 357766451 | 0 |
| 21.83.21.52 | 357766452 | 0 |
| 21.83.21.53 | 357766453 | 0 |
| 21.83.21.54 | 357766454 | 0 |
| 21.83.21.55 | 357766455 | 0 |
| 21.83.21.56 | 357766456 | 0 |
| 21.83.21.57 | 357766457 | 0 |
| 21.83.21.58 | 357766458 | 0 |
| 21.83.21.59 | 357766459 | 0 |
| 21.83.21.60 | 357766460 | 0 |
| 21.83.21.61 | 357766461 | 0 |
| 21.83.21.62 | 357766462 | 0 |
| 21.83.21.63 | 357766463 | 0 |
| 21.83.21.64 | 357766464 | 0 |
| 21.83.21.65 | 357766465 | 0 |
| 21.83.21.66 | 357766466 | 0 |
| 21.83.21.67 | 357766467 | 0 |
| 21.83.21.68 | 357766468 | 0 |
| 21.83.21.69 | 357766469 | 0 |
| 21.83.21.70 | 357766470 | 0 |
| 21.83.21.71 | 357766471 | 0 |
| 21.83.21.72 | 357766472 | 0 |
| 21.83.21.73 | 357766473 | 0 |
| 21.83.21.74 | 357766474 | 0 |
| 21.83.21.75 | 357766475 | 0 |
| 21.83.21.76 | 357766476 | 0 |
| 21.83.21.77 | 357766477 | 0 |
| 21.83.21.78 | 357766478 | 0 |
| 21.83.21.79 | 357766479 | 0 |
| 21.83.21.80 | 357766480 | 0 |
| 21.83.21.81 | 357766481 | 0 |
| 21.83.21.82 | 357766482 | 0 |
| 21.83.21.83 | 357766483 | 0 |
| 21.83.21.84 | 357766484 | 0 |
| 21.83.21.85 | 357766485 | 0 |