La dirección IP 21.90.42 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 | 30/08/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Columbus | 39,9664 | -83,0128 | 2017-08-30 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2017-08-30 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.90.42.0 | 358230528 | 0 |
| 21.90.42.1 | 358230529 | 0 |
| 21.90.42.2 | 358230530 | 0 |
| 21.90.42.3 | 358230531 | 0 |
| 21.90.42.4 | 358230532 | 0 |
| 21.90.42.5 | 358230533 | 0 |
| 21.90.42.6 | 358230534 | 0 |
| 21.90.42.7 | 358230535 | 0 |
| 21.90.42.8 | 358230536 | 0 |
| 21.90.42.9 | 358230537 | 0 |
| 21.90.42.10 | 358230538 | 0 |
| 21.90.42.11 | 358230539 | 0 |
| 21.90.42.12 | 358230540 | 0 |
| 21.90.42.13 | 358230541 | 0 |
| 21.90.42.14 | 358230542 | 0 |
| 21.90.42.15 | 358230543 | 0 |
| 21.90.42.16 | 358230544 | 0 |
| 21.90.42.17 | 358230545 | 0 |
| 21.90.42.18 | 358230546 | 0 |
| 21.90.42.19 | 358230547 | 0 |
| 21.90.42.20 | 358230548 | 0 |
| 21.90.42.21 | 358230549 | 0 |
| 21.90.42.22 | 358230550 | 0 |
| 21.90.42.23 | 358230551 | 0 |
| 21.90.42.24 | 358230552 | 0 |
| 21.90.42.25 | 358230553 | 0 |
| 21.90.42.26 | 358230554 | 0 |
| 21.90.42.27 | 358230555 | 0 |
| 21.90.42.28 | 358230556 | 0 |
| 21.90.42.29 | 358230557 | 0 |
| 21.90.42.30 | 358230558 | 0 |
| 21.90.42.31 | 358230559 | 0 |
| 21.90.42.32 | 358230560 | 0 |
| 21.90.42.33 | 358230561 | 0 |
| 21.90.42.34 | 358230562 | 0 |
| 21.90.42.35 | 358230563 | 0 |
| 21.90.42.36 | 358230564 | 0 |
| 21.90.42.37 | 358230565 | 0 |
| 21.90.42.38 | 358230566 | 0 |
| 21.90.42.39 | 358230567 | 0 |
| 21.90.42.40 | 358230568 | 0 |
| 21.90.42.41 | 358230569 | 0 |
| 21.90.42.42 | 358230570 | 0 |
| 21.90.42.43 | 358230571 | 0 |
| 21.90.42.44 | 358230572 | 0 |
| 21.90.42.45 | 358230573 | 0 |
| 21.90.42.46 | 358230574 | 0 |
| 21.90.42.47 | 358230575 | 0 |
| 21.90.42.48 | 358230576 | 0 |
| 21.90.42.49 | 358230577 | 0 |
| 21.90.42.50 | 358230578 | 0 |
| 21.90.42.51 | 358230579 | 0 |
| 21.90.42.52 | 358230580 | 0 |
| 21.90.42.53 | 358230581 | 0 |
| 21.90.42.54 | 358230582 | 0 |
| 21.90.42.55 | 358230583 | 0 |
| 21.90.42.56 | 358230584 | 0 |
| 21.90.42.57 | 358230585 | 0 |
| 21.90.42.58 | 358230586 | 0 |
| 21.90.42.59 | 358230587 | 0 |
| 21.90.42.60 | 358230588 | 0 |
| 21.90.42.61 | 358230589 | 0 |
| 21.90.42.62 | 358230590 | 0 |
| 21.90.42.63 | 358230591 | 0 |
| 21.90.42.64 | 358230592 | 0 |
| 21.90.42.65 | 358230593 | 0 |
| 21.90.42.66 | 358230594 | 0 |
| 21.90.42.67 | 358230595 | 0 |
| 21.90.42.68 | 358230596 | 0 |
| 21.90.42.69 | 358230597 | 0 |
| 21.90.42.70 | 358230598 | 0 |
| 21.90.42.71 | 358230599 | 0 |
| 21.90.42.72 | 358230600 | 0 |
| 21.90.42.73 | 358230601 | 0 |
| 21.90.42.74 | 358230602 | 0 |
| 21.90.42.75 | 358230603 | 0 |
| 21.90.42.76 | 358230604 | 0 |
| 21.90.42.77 | 358230605 | 0 |
| 21.90.42.78 | 358230606 | 0 |
| 21.90.42.79 | 358230607 | 0 |
| 21.90.42.80 | 358230608 | 0 |
| 21.90.42.81 | 358230609 | 0 |
| 21.90.42.82 | 358230610 | 0 |
| 21.90.42.83 | 358230611 | 0 |
| 21.90.42.84 | 358230612 | 0 |
| 21.90.42.85 | 358230613 | 0 |