La dirección IP 21.78.21 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 | 19/08/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Columbus | 39,9664 | -83,0128 | 2017-08-18 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2017-08-18 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.78.21.0 | 357438720 | 0 |
| 21.78.21.1 | 357438721 | 0 |
| 21.78.21.2 | 357438722 | 0 |
| 21.78.21.3 | 357438723 | 0 |
| 21.78.21.4 | 357438724 | 0 |
| 21.78.21.5 | 357438725 | 0 |
| 21.78.21.6 | 357438726 | 0 |
| 21.78.21.7 | 357438727 | 0 |
| 21.78.21.8 | 357438728 | 0 |
| 21.78.21.9 | 357438729 | 0 |
| 21.78.21.10 | 357438730 | 0 |
| 21.78.21.11 | 357438731 | 0 |
| 21.78.21.12 | 357438732 | 0 |
| 21.78.21.13 | 357438733 | 0 |
| 21.78.21.14 | 357438734 | 0 |
| 21.78.21.15 | 357438735 | 0 |
| 21.78.21.16 | 357438736 | 0 |
| 21.78.21.17 | 357438737 | 0 |
| 21.78.21.18 | 357438738 | 0 |
| 21.78.21.19 | 357438739 | 0 |
| 21.78.21.20 | 357438740 | 0 |
| 21.78.21.21 | 357438741 | 0 |
| 21.78.21.22 | 357438742 | 0 |
| 21.78.21.23 | 357438743 | 0 |
| 21.78.21.24 | 357438744 | 0 |
| 21.78.21.25 | 357438745 | 0 |
| 21.78.21.26 | 357438746 | 0 |
| 21.78.21.27 | 357438747 | 0 |
| 21.78.21.28 | 357438748 | 0 |
| 21.78.21.29 | 357438749 | 0 |
| 21.78.21.30 | 357438750 | 0 |
| 21.78.21.31 | 357438751 | 0 |
| 21.78.21.32 | 357438752 | 0 |
| 21.78.21.33 | 357438753 | 0 |
| 21.78.21.34 | 357438754 | 0 |
| 21.78.21.35 | 357438755 | 0 |
| 21.78.21.36 | 357438756 | 0 |
| 21.78.21.37 | 357438757 | 0 |
| 21.78.21.38 | 357438758 | 0 |
| 21.78.21.39 | 357438759 | 0 |
| 21.78.21.40 | 357438760 | 0 |
| 21.78.21.41 | 357438761 | 0 |
| 21.78.21.42 | 357438762 | 0 |
| 21.78.21.43 | 357438763 | 0 |
| 21.78.21.44 | 357438764 | 0 |
| 21.78.21.45 | 357438765 | 0 |
| 21.78.21.46 | 357438766 | 0 |
| 21.78.21.47 | 357438767 | 0 |
| 21.78.21.48 | 357438768 | 0 |
| 21.78.21.49 | 357438769 | 0 |
| 21.78.21.50 | 357438770 | 0 |
| 21.78.21.51 | 357438771 | 0 |
| 21.78.21.52 | 357438772 | 0 |
| 21.78.21.53 | 357438773 | 0 |
| 21.78.21.54 | 357438774 | 0 |
| 21.78.21.55 | 357438775 | 0 |
| 21.78.21.56 | 357438776 | 0 |
| 21.78.21.57 | 357438777 | 0 |
| 21.78.21.58 | 357438778 | 0 |
| 21.78.21.59 | 357438779 | 0 |
| 21.78.21.60 | 357438780 | 0 |
| 21.78.21.61 | 357438781 | 0 |
| 21.78.21.62 | 357438782 | 0 |
| 21.78.21.63 | 357438783 | 0 |
| 21.78.21.64 | 357438784 | 0 |
| 21.78.21.65 | 357438785 | 0 |
| 21.78.21.66 | 357438786 | 0 |
| 21.78.21.67 | 357438787 | 0 |
| 21.78.21.68 | 357438788 | 0 |
| 21.78.21.69 | 357438789 | 0 |
| 21.78.21.70 | 357438790 | 0 |
| 21.78.21.71 | 357438791 | 0 |
| 21.78.21.72 | 357438792 | 0 |
| 21.78.21.73 | 357438793 | 0 |
| 21.78.21.74 | 357438794 | 0 |
| 21.78.21.75 | 357438795 | 0 |
| 21.78.21.76 | 357438796 | 0 |
| 21.78.21.77 | 357438797 | 0 |
| 21.78.21.78 | 357438798 | 0 |
| 21.78.21.79 | 357438799 | 0 |
| 21.78.21.80 | 357438800 | 0 |
| 21.78.21.81 | 357438801 | 0 |
| 21.78.21.82 | 357438802 | 0 |
| 21.78.21.83 | 357438803 | 0 |
| 21.78.21.84 | 357438804 | 0 |
| 21.78.21.85 | 357438805 | 0 |