La dirección IP 21.97.31 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 | 13/10/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Columbus | 39,9664 | -83,0128 | 2017-10-12 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2017-10-12 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.97.31.0 | 358686464 | 0 |
| 21.97.31.1 | 358686465 | 0 |
| 21.97.31.2 | 358686466 | 0 |
| 21.97.31.3 | 358686467 | 0 |
| 21.97.31.4 | 358686468 | 0 |
| 21.97.31.5 | 358686469 | 0 |
| 21.97.31.6 | 358686470 | 0 |
| 21.97.31.7 | 358686471 | 0 |
| 21.97.31.8 | 358686472 | 0 |
| 21.97.31.9 | 358686473 | 0 |
| 21.97.31.10 | 358686474 | 0 |
| 21.97.31.11 | 358686475 | 0 |
| 21.97.31.12 | 358686476 | 0 |
| 21.97.31.13 | 358686477 | 0 |
| 21.97.31.14 | 358686478 | 0 |
| 21.97.31.15 | 358686479 | 0 |
| 21.97.31.16 | 358686480 | 0 |
| 21.97.31.17 | 358686481 | 0 |
| 21.97.31.18 | 358686482 | 0 |
| 21.97.31.19 | 358686483 | 0 |
| 21.97.31.20 | 358686484 | 0 |
| 21.97.31.21 | 358686485 | 0 |
| 21.97.31.22 | 358686486 | 0 |
| 21.97.31.23 | 358686487 | 0 |
| 21.97.31.24 | 358686488 | 0 |
| 21.97.31.25 | 358686489 | 0 |
| 21.97.31.26 | 358686490 | 0 |
| 21.97.31.27 | 358686491 | 0 |
| 21.97.31.28 | 358686492 | 0 |
| 21.97.31.29 | 358686493 | 0 |
| 21.97.31.30 | 358686494 | 0 |
| 21.97.31.31 | 358686495 | 0 |
| 21.97.31.32 | 358686496 | 0 |
| 21.97.31.33 | 358686497 | 0 |
| 21.97.31.34 | 358686498 | 0 |
| 21.97.31.35 | 358686499 | 0 |
| 21.97.31.36 | 358686500 | 0 |
| 21.97.31.37 | 358686501 | 0 |
| 21.97.31.38 | 358686502 | 0 |
| 21.97.31.39 | 358686503 | 0 |
| 21.97.31.40 | 358686504 | 0 |
| 21.97.31.41 | 358686505 | 0 |
| 21.97.31.42 | 358686506 | 0 |
| 21.97.31.43 | 358686507 | 0 |
| 21.97.31.44 | 358686508 | 0 |
| 21.97.31.45 | 358686509 | 0 |
| 21.97.31.46 | 358686510 | 0 |
| 21.97.31.47 | 358686511 | 0 |
| 21.97.31.48 | 358686512 | 0 |
| 21.97.31.49 | 358686513 | 0 |
| 21.97.31.50 | 358686514 | 0 |
| 21.97.31.51 | 358686515 | 0 |
| 21.97.31.52 | 358686516 | 0 |
| 21.97.31.53 | 358686517 | 0 |
| 21.97.31.54 | 358686518 | 0 |
| 21.97.31.55 | 358686519 | 0 |
| 21.97.31.56 | 358686520 | 0 |
| 21.97.31.57 | 358686521 | 0 |
| 21.97.31.58 | 358686522 | 0 |
| 21.97.31.59 | 358686523 | 0 |
| 21.97.31.60 | 358686524 | 0 |
| 21.97.31.61 | 358686525 | 0 |
| 21.97.31.62 | 358686526 | 0 |
| 21.97.31.63 | 358686527 | 0 |
| 21.97.31.64 | 358686528 | 0 |
| 21.97.31.65 | 358686529 | 0 |
| 21.97.31.66 | 358686530 | 0 |
| 21.97.31.67 | 358686531 | 0 |
| 21.97.31.68 | 358686532 | 0 |
| 21.97.31.69 | 358686533 | 0 |
| 21.97.31.70 | 358686534 | 0 |
| 21.97.31.71 | 358686535 | 0 |
| 21.97.31.72 | 358686536 | 0 |
| 21.97.31.73 | 358686537 | 0 |
| 21.97.31.74 | 358686538 | 0 |
| 21.97.31.75 | 358686539 | 0 |
| 21.97.31.76 | 358686540 | 0 |
| 21.97.31.77 | 358686541 | 0 |
| 21.97.31.78 | 358686542 | 0 |
| 21.97.31.79 | 358686543 | 0 |
| 21.97.31.80 | 358686544 | 0 |
| 21.97.31.81 | 358686545 | 0 |
| 21.97.31.82 | 358686546 | 0 |
| 21.97.31.83 | 358686547 | 0 |
| 21.97.31.84 | 358686548 | 0 |
| 21.97.31.85 | 358686549 | 0 |