Les adresses IP débutant par 21.85.72 sont fournies par China Education and Research Network Center, elles appartiennent au CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, le bloc IP comprant les adresses de 22.30.204.0 à 22.30.205.255). Le numéro de système autonome (ASN) est 4538.
| ASN | 4538 |
| IP commençant par | 22.30.204.0 |
| IP se terminant par | 22.30.205.255 |
| Nom ASN | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérique | |
| Registe | |
| Dernière mise à jour | 16/05/2019 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Houston | 29,7633 | -95,3633 | 2019-05-16 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2019-05-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.85.72.0 | 357910528 | 0 |
| 21.85.72.1 | 357910529 | 0 |
| 21.85.72.2 | 357910530 | 0 |
| 21.85.72.3 | 357910531 | 0 |
| 21.85.72.4 | 357910532 | 0 |
| 21.85.72.5 | 357910533 | 0 |
| 21.85.72.6 | 357910534 | 0 |
| 21.85.72.7 | 357910535 | 0 |
| 21.85.72.8 | 357910536 | 0 |
| 21.85.72.9 | 357910537 | 0 |
| 21.85.72.10 | 357910538 | 0 |
| 21.85.72.11 | 357910539 | 0 |
| 21.85.72.12 | 357910540 | 0 |
| 21.85.72.13 | 357910541 | 0 |
| 21.85.72.14 | 357910542 | 0 |
| 21.85.72.15 | 357910543 | 0 |
| 21.85.72.16 | 357910544 | 0 |
| 21.85.72.17 | 357910545 | 0 |
| 21.85.72.18 | 357910546 | 0 |
| 21.85.72.19 | 357910547 | 0 |
| 21.85.72.20 | 357910548 | 0 |
| 21.85.72.21 | 357910549 | 0 |
| 21.85.72.22 | 357910550 | 0 |
| 21.85.72.23 | 357910551 | 0 |
| 21.85.72.24 | 357910552 | 0 |
| 21.85.72.25 | 357910553 | 0 |
| 21.85.72.26 | 357910554 | 0 |
| 21.85.72.27 | 357910555 | 0 |
| 21.85.72.28 | 357910556 | 0 |
| 21.85.72.29 | 357910557 | 0 |
| 21.85.72.30 | 357910558 | 0 |
| 21.85.72.31 | 357910559 | 0 |
| 21.85.72.32 | 357910560 | 0 |
| 21.85.72.33 | 357910561 | 0 |
| 21.85.72.34 | 357910562 | 0 |
| 21.85.72.35 | 357910563 | 0 |
| 21.85.72.36 | 357910564 | 0 |
| 21.85.72.37 | 357910565 | 0 |
| 21.85.72.38 | 357910566 | 0 |
| 21.85.72.39 | 357910567 | 0 |
| 21.85.72.40 | 357910568 | 0 |
| 21.85.72.41 | 357910569 | 0 |
| 21.85.72.42 | 357910570 | 0 |
| 21.85.72.43 | 357910571 | 0 |
| 21.85.72.44 | 357910572 | 0 |
| 21.85.72.45 | 357910573 | 0 |
| 21.85.72.46 | 357910574 | 0 |
| 21.85.72.47 | 357910575 | 0 |
| 21.85.72.48 | 357910576 | 0 |
| 21.85.72.49 | 357910577 | 0 |
| 21.85.72.50 | 357910578 | 0 |
| 21.85.72.51 | 357910579 | 0 |
| 21.85.72.52 | 357910580 | 0 |
| 21.85.72.53 | 357910581 | 0 |
| 21.85.72.54 | 357910582 | 0 |
| 21.85.72.55 | 357910583 | 0 |
| 21.85.72.56 | 357910584 | 0 |
| 21.85.72.57 | 357910585 | 0 |
| 21.85.72.58 | 357910586 | 0 |
| 21.85.72.59 | 357910587 | 0 |
| 21.85.72.60 | 357910588 | 0 |
| 21.85.72.61 | 357910589 | 0 |
| 21.85.72.62 | 357910590 | 0 |
| 21.85.72.63 | 357910591 | 0 |
| 21.85.72.64 | 357910592 | 0 |
| 21.85.72.65 | 357910593 | 0 |
| 21.85.72.66 | 357910594 | 0 |
| 21.85.72.67 | 357910595 | 0 |
| 21.85.72.68 | 357910596 | 0 |
| 21.85.72.69 | 357910597 | 0 |
| 21.85.72.70 | 357910598 | 0 |
| 21.85.72.71 | 357910599 | 0 |
| 21.85.72.72 | 357910600 | 0 |
| 21.85.72.73 | 357910601 | 0 |
| 21.85.72.74 | 357910602 | 0 |
| 21.85.72.75 | 357910603 | 0 |
| 21.85.72.76 | 357910604 | 0 |
| 21.85.72.77 | 357910605 | 0 |
| 21.85.72.78 | 357910606 | 0 |
| 21.85.72.79 | 357910607 | 0 |
| 21.85.72.80 | 357910608 | 0 |
| 21.85.72.81 | 357910609 | 0 |
| 21.85.72.82 | 357910610 | 0 |
| 21.85.72.83 | 357910611 | 0 |
| 21.85.72.84 | 357910612 | 0 |
| 21.85.72.85 | 357910613 | 0 |