L'indirizzo IP 21.91.68 è fornito da China Education and Research Network Center, che è di proprietà del CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP tra 22.30.204.0 a 22.30.205.255 ). Il numero di sistema autonomo (ASN) è 4538.
| ASN | 4538 |
| IP inizia con | 22.30.204.0 |
| IP finale con | 22.30.205.255 |
| ASN Nome | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numerico | |
| Registe | |
| Ultimo aggiornamento | 22/07/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Houston | 29,7633 | -95,3633 | 2018-07-21 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2018-07-21 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.91.68.0 | 358302720 | 0 |
| 21.91.68.1 | 358302721 | 0 |
| 21.91.68.2 | 358302722 | 0 |
| 21.91.68.3 | 358302723 | 0 |
| 21.91.68.4 | 358302724 | 0 |
| 21.91.68.5 | 358302725 | 0 |
| 21.91.68.6 | 358302726 | 0 |
| 21.91.68.7 | 358302727 | 0 |
| 21.91.68.8 | 358302728 | 0 |
| 21.91.68.9 | 358302729 | 0 |
| 21.91.68.10 | 358302730 | 0 |
| 21.91.68.11 | 358302731 | 0 |
| 21.91.68.12 | 358302732 | 0 |
| 21.91.68.13 | 358302733 | 0 |
| 21.91.68.14 | 358302734 | 0 |
| 21.91.68.15 | 358302735 | 0 |
| 21.91.68.16 | 358302736 | 0 |
| 21.91.68.17 | 358302737 | 0 |
| 21.91.68.18 | 358302738 | 0 |
| 21.91.68.19 | 358302739 | 0 |
| 21.91.68.20 | 358302740 | 0 |
| 21.91.68.21 | 358302741 | 0 |
| 21.91.68.22 | 358302742 | 0 |
| 21.91.68.23 | 358302743 | 0 |
| 21.91.68.24 | 358302744 | 0 |
| 21.91.68.25 | 358302745 | 0 |
| 21.91.68.26 | 358302746 | 0 |
| 21.91.68.27 | 358302747 | 0 |
| 21.91.68.28 | 358302748 | 0 |
| 21.91.68.29 | 358302749 | 0 |
| 21.91.68.30 | 358302750 | 0 |
| 21.91.68.31 | 358302751 | 0 |
| 21.91.68.32 | 358302752 | 0 |
| 21.91.68.33 | 358302753 | 0 |
| 21.91.68.34 | 358302754 | 0 |
| 21.91.68.35 | 358302755 | 0 |
| 21.91.68.36 | 358302756 | 0 |
| 21.91.68.37 | 358302757 | 0 |
| 21.91.68.38 | 358302758 | 0 |
| 21.91.68.39 | 358302759 | 0 |
| 21.91.68.40 | 358302760 | 0 |
| 21.91.68.41 | 358302761 | 0 |
| 21.91.68.42 | 358302762 | 0 |
| 21.91.68.43 | 358302763 | 0 |
| 21.91.68.44 | 358302764 | 0 |
| 21.91.68.45 | 358302765 | 0 |
| 21.91.68.46 | 358302766 | 0 |
| 21.91.68.47 | 358302767 | 0 |
| 21.91.68.48 | 358302768 | 0 |
| 21.91.68.49 | 358302769 | 0 |
| 21.91.68.50 | 358302770 | 0 |
| 21.91.68.51 | 358302771 | 0 |
| 21.91.68.52 | 358302772 | 0 |
| 21.91.68.53 | 358302773 | 0 |
| 21.91.68.54 | 358302774 | 0 |
| 21.91.68.55 | 358302775 | 0 |
| 21.91.68.56 | 358302776 | 0 |
| 21.91.68.57 | 358302777 | 0 |
| 21.91.68.58 | 358302778 | 0 |
| 21.91.68.59 | 358302779 | 0 |
| 21.91.68.60 | 358302780 | 0 |
| 21.91.68.61 | 358302781 | 0 |
| 21.91.68.62 | 358302782 | 0 |
| 21.91.68.63 | 358302783 | 0 |
| 21.91.68.64 | 358302784 | 0 |
| 21.91.68.65 | 358302785 | 0 |
| 21.91.68.66 | 358302786 | 0 |
| 21.91.68.67 | 358302787 | 0 |
| 21.91.68.68 | 358302788 | 0 |
| 21.91.68.69 | 358302789 | 0 |
| 21.91.68.70 | 358302790 | 0 |
| 21.91.68.71 | 358302791 | 0 |
| 21.91.68.72 | 358302792 | 0 |
| 21.91.68.73 | 358302793 | 0 |
| 21.91.68.74 | 358302794 | 0 |
| 21.91.68.75 | 358302795 | 0 |
| 21.91.68.76 | 358302796 | 0 |
| 21.91.68.77 | 358302797 | 0 |
| 21.91.68.78 | 358302798 | 0 |
| 21.91.68.79 | 358302799 | 0 |
| 21.91.68.80 | 358302800 | 0 |
| 21.91.68.81 | 358302801 | 0 |
| 21.91.68.82 | 358302802 | 0 |
| 21.91.68.83 | 358302803 | 0 |
| 21.91.68.84 | 358302804 | 0 |
| 21.91.68.85 | 358302805 | 0 |