The IP address 21.78.17 is provided by China Education and Research Network Center, it's belong to the CDIR (Classless Inter-Domain Routing) 22.30.204.0/23 (range 22.30.204.0 to 22.30.205.255). The autonomous system number (ASN) is 4538.
| ASN | 4538 |
| IP starting by | 22.30.204.0 |
| IP ending by | 22.30.205.255 |
| ASN Name | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| Numerical IP | |
| Registry | |
| Last update | 16/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-08-16 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-08-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.78.17.0 | 357437696 | 0 |
| 21.78.17.1 | 357437697 | 0 |
| 21.78.17.2 | 357437698 | 0 |
| 21.78.17.3 | 357437699 | 0 |
| 21.78.17.4 | 357437700 | 0 |
| 21.78.17.5 | 357437701 | 0 |
| 21.78.17.6 | 357437702 | 0 |
| 21.78.17.7 | 357437703 | 0 |
| 21.78.17.8 | 357437704 | 0 |
| 21.78.17.9 | 357437705 | 0 |
| 21.78.17.10 | 357437706 | 0 |
| 21.78.17.11 | 357437707 | 0 |
| 21.78.17.12 | 357437708 | 0 |
| 21.78.17.13 | 357437709 | 0 |
| 21.78.17.14 | 357437710 | 0 |
| 21.78.17.15 | 357437711 | 0 |
| 21.78.17.16 | 357437712 | 0 |
| 21.78.17.17 | 357437713 | 0 |
| 21.78.17.18 | 357437714 | 0 |
| 21.78.17.19 | 357437715 | 0 |
| 21.78.17.20 | 357437716 | 0 |
| 21.78.17.21 | 357437717 | 0 |
| 21.78.17.22 | 357437718 | 0 |
| 21.78.17.23 | 357437719 | 0 |
| 21.78.17.24 | 357437720 | 0 |
| 21.78.17.25 | 357437721 | 0 |
| 21.78.17.26 | 357437722 | 0 |
| 21.78.17.27 | 357437723 | 0 |
| 21.78.17.28 | 357437724 | 0 |
| 21.78.17.29 | 357437725 | 0 |
| 21.78.17.30 | 357437726 | 0 |
| 21.78.17.31 | 357437727 | 0 |
| 21.78.17.32 | 357437728 | 0 |
| 21.78.17.33 | 357437729 | 0 |
| 21.78.17.34 | 357437730 | 0 |
| 21.78.17.35 | 357437731 | 0 |
| 21.78.17.36 | 357437732 | 0 |
| 21.78.17.37 | 357437733 | 0 |
| 21.78.17.38 | 357437734 | 0 |
| 21.78.17.39 | 357437735 | 0 |
| 21.78.17.40 | 357437736 | 0 |
| 21.78.17.41 | 357437737 | 0 |
| 21.78.17.42 | 357437738 | 0 |
| 21.78.17.43 | 357437739 | 0 |
| 21.78.17.44 | 357437740 | 0 |
| 21.78.17.45 | 357437741 | 0 |
| 21.78.17.46 | 357437742 | 0 |
| 21.78.17.47 | 357437743 | 0 |
| 21.78.17.48 | 357437744 | 0 |
| 21.78.17.49 | 357437745 | 0 |
| 21.78.17.50 | 357437746 | 0 |
| 21.78.17.51 | 357437747 | 0 |
| 21.78.17.52 | 357437748 | 0 |
| 21.78.17.53 | 357437749 | 0 |
| 21.78.17.54 | 357437750 | 0 |
| 21.78.17.55 | 357437751 | 0 |
| 21.78.17.56 | 357437752 | 0 |
| 21.78.17.57 | 357437753 | 0 |
| 21.78.17.58 | 357437754 | 0 |
| 21.78.17.59 | 357437755 | 0 |
| 21.78.17.60 | 357437756 | 0 |
| 21.78.17.61 | 357437757 | 0 |
| 21.78.17.62 | 357437758 | 0 |
| 21.78.17.63 | 357437759 | 0 |
| 21.78.17.64 | 357437760 | 0 |
| 21.78.17.65 | 357437761 | 0 |
| 21.78.17.66 | 357437762 | 0 |
| 21.78.17.67 | 357437763 | 0 |
| 21.78.17.68 | 357437764 | 0 |
| 21.78.17.69 | 357437765 | 0 |
| 21.78.17.70 | 357437766 | 0 |
| 21.78.17.71 | 357437767 | 0 |
| 21.78.17.72 | 357437768 | 0 |
| 21.78.17.73 | 357437769 | 0 |
| 21.78.17.74 | 357437770 | 0 |
| 21.78.17.75 | 357437771 | 0 |
| 21.78.17.76 | 357437772 | 0 |
| 21.78.17.77 | 357437773 | 0 |
| 21.78.17.78 | 357437774 | 0 |
| 21.78.17.79 | 357437775 | 0 |
| 21.78.17.80 | 357437776 | 0 |
| 21.78.17.81 | 357437777 | 0 |
| 21.78.17.82 | 357437778 | 0 |
| 21.78.17.83 | 357437779 | 0 |
| 21.78.17.84 | 357437780 | 0 |
| 21.78.17.85 | 357437781 | 0 |