Les adresses IP débutant par 21.99.78 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 | 17/09/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-09-17 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-09-17 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.99.78.0 | 358829568 | 0 |
| 21.99.78.1 | 358829569 | 0 |
| 21.99.78.2 | 358829570 | 0 |
| 21.99.78.3 | 358829571 | 0 |
| 21.99.78.4 | 358829572 | 0 |
| 21.99.78.5 | 358829573 | 0 |
| 21.99.78.6 | 358829574 | 0 |
| 21.99.78.7 | 358829575 | 0 |
| 21.99.78.8 | 358829576 | 0 |
| 21.99.78.9 | 358829577 | 0 |
| 21.99.78.10 | 358829578 | 0 |
| 21.99.78.11 | 358829579 | 0 |
| 21.99.78.12 | 358829580 | 0 |
| 21.99.78.13 | 358829581 | 0 |
| 21.99.78.14 | 358829582 | 0 |
| 21.99.78.15 | 358829583 | 0 |
| 21.99.78.16 | 358829584 | 0 |
| 21.99.78.17 | 358829585 | 0 |
| 21.99.78.18 | 358829586 | 0 |
| 21.99.78.19 | 358829587 | 0 |
| 21.99.78.20 | 358829588 | 0 |
| 21.99.78.21 | 358829589 | 0 |
| 21.99.78.22 | 358829590 | 0 |
| 21.99.78.23 | 358829591 | 0 |
| 21.99.78.24 | 358829592 | 0 |
| 21.99.78.25 | 358829593 | 0 |
| 21.99.78.26 | 358829594 | 0 |
| 21.99.78.27 | 358829595 | 0 |
| 21.99.78.28 | 358829596 | 0 |
| 21.99.78.29 | 358829597 | 0 |
| 21.99.78.30 | 358829598 | 0 |
| 21.99.78.31 | 358829599 | 0 |
| 21.99.78.32 | 358829600 | 0 |
| 21.99.78.33 | 358829601 | 0 |
| 21.99.78.34 | 358829602 | 0 |
| 21.99.78.35 | 358829603 | 0 |
| 21.99.78.36 | 358829604 | 0 |
| 21.99.78.37 | 358829605 | 0 |
| 21.99.78.38 | 358829606 | 0 |
| 21.99.78.39 | 358829607 | 0 |
| 21.99.78.40 | 358829608 | 0 |
| 21.99.78.41 | 358829609 | 0 |
| 21.99.78.42 | 358829610 | 0 |
| 21.99.78.43 | 358829611 | 0 |
| 21.99.78.44 | 358829612 | 0 |
| 21.99.78.45 | 358829613 | 0 |
| 21.99.78.46 | 358829614 | 0 |
| 21.99.78.47 | 358829615 | 0 |
| 21.99.78.48 | 358829616 | 0 |
| 21.99.78.49 | 358829617 | 0 |
| 21.99.78.50 | 358829618 | 0 |
| 21.99.78.51 | 358829619 | 0 |
| 21.99.78.52 | 358829620 | 0 |
| 21.99.78.53 | 358829621 | 0 |
| 21.99.78.54 | 358829622 | 0 |
| 21.99.78.55 | 358829623 | 0 |
| 21.99.78.56 | 358829624 | 0 |
| 21.99.78.57 | 358829625 | 0 |
| 21.99.78.58 | 358829626 | 0 |
| 21.99.78.59 | 358829627 | 0 |
| 21.99.78.60 | 358829628 | 0 |
| 21.99.78.61 | 358829629 | 0 |
| 21.99.78.62 | 358829630 | 0 |
| 21.99.78.63 | 358829631 | 0 |
| 21.99.78.64 | 358829632 | 0 |
| 21.99.78.65 | 358829633 | 0 |
| 21.99.78.66 | 358829634 | 0 |
| 21.99.78.67 | 358829635 | 0 |
| 21.99.78.68 | 358829636 | 0 |
| 21.99.78.69 | 358829637 | 0 |
| 21.99.78.70 | 358829638 | 0 |
| 21.99.78.71 | 358829639 | 0 |
| 21.99.78.72 | 358829640 | 0 |
| 21.99.78.73 | 358829641 | 0 |
| 21.99.78.74 | 358829642 | 0 |
| 21.99.78.75 | 358829643 | 0 |
| 21.99.78.76 | 358829644 | 0 |
| 21.99.78.77 | 358829645 | 0 |
| 21.99.78.78 | 358829646 | 0 |
| 21.99.78.79 | 358829647 | 0 |
| 21.99.78.80 | 358829648 | 0 |
| 21.99.78.81 | 358829649 | 0 |
| 21.99.78.82 | 358829650 | 0 |
| 21.99.78.83 | 358829651 | 0 |
| 21.99.78.84 | 358829652 | 0 |
| 21.99.78.85 | 358829653 | 0 |