The IP address 21.97.28 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 | 18/02/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2018-02-18 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-02-18 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.97.28.0 | 358685696 | 0 |
| 21.97.28.1 | 358685697 | 0 |
| 21.97.28.2 | 358685698 | 0 |
| 21.97.28.3 | 358685699 | 0 |
| 21.97.28.4 | 358685700 | 0 |
| 21.97.28.5 | 358685701 | 0 |
| 21.97.28.6 | 358685702 | 0 |
| 21.97.28.7 | 358685703 | 0 |
| 21.97.28.8 | 358685704 | 0 |
| 21.97.28.9 | 358685705 | 0 |
| 21.97.28.10 | 358685706 | 0 |
| 21.97.28.11 | 358685707 | 0 |
| 21.97.28.12 | 358685708 | 0 |
| 21.97.28.13 | 358685709 | 0 |
| 21.97.28.14 | 358685710 | 0 |
| 21.97.28.15 | 358685711 | 0 |
| 21.97.28.16 | 358685712 | 0 |
| 21.97.28.17 | 358685713 | 0 |
| 21.97.28.18 | 358685714 | 0 |
| 21.97.28.19 | 358685715 | 0 |
| 21.97.28.20 | 358685716 | 0 |
| 21.97.28.21 | 358685717 | 0 |
| 21.97.28.22 | 358685718 | 0 |
| 21.97.28.23 | 358685719 | 0 |
| 21.97.28.24 | 358685720 | 0 |
| 21.97.28.25 | 358685721 | 0 |
| 21.97.28.26 | 358685722 | 0 |
| 21.97.28.27 | 358685723 | 0 |
| 21.97.28.28 | 358685724 | 0 |
| 21.97.28.29 | 358685725 | 0 |
| 21.97.28.30 | 358685726 | 0 |
| 21.97.28.31 | 358685727 | 0 |
| 21.97.28.32 | 358685728 | 0 |
| 21.97.28.33 | 358685729 | 0 |
| 21.97.28.34 | 358685730 | 0 |
| 21.97.28.35 | 358685731 | 0 |
| 21.97.28.36 | 358685732 | 0 |
| 21.97.28.37 | 358685733 | 0 |
| 21.97.28.38 | 358685734 | 0 |
| 21.97.28.39 | 358685735 | 0 |
| 21.97.28.40 | 358685736 | 0 |
| 21.97.28.41 | 358685737 | 0 |
| 21.97.28.42 | 358685738 | 0 |
| 21.97.28.43 | 358685739 | 0 |
| 21.97.28.44 | 358685740 | 0 |
| 21.97.28.45 | 358685741 | 0 |
| 21.97.28.46 | 358685742 | 0 |
| 21.97.28.47 | 358685743 | 0 |
| 21.97.28.48 | 358685744 | 0 |
| 21.97.28.49 | 358685745 | 0 |
| 21.97.28.50 | 358685746 | 0 |
| 21.97.28.51 | 358685747 | 0 |
| 21.97.28.52 | 358685748 | 0 |
| 21.97.28.53 | 358685749 | 0 |
| 21.97.28.54 | 358685750 | 0 |
| 21.97.28.55 | 358685751 | 0 |
| 21.97.28.56 | 358685752 | 0 |
| 21.97.28.57 | 358685753 | 0 |
| 21.97.28.58 | 358685754 | 0 |
| 21.97.28.59 | 358685755 | 0 |
| 21.97.28.60 | 358685756 | 0 |
| 21.97.28.61 | 358685757 | 0 |
| 21.97.28.62 | 358685758 | 0 |
| 21.97.28.63 | 358685759 | 0 |
| 21.97.28.64 | 358685760 | 0 |
| 21.97.28.65 | 358685761 | 0 |
| 21.97.28.66 | 358685762 | 0 |
| 21.97.28.67 | 358685763 | 0 |
| 21.97.28.68 | 358685764 | 0 |
| 21.97.28.69 | 358685765 | 0 |
| 21.97.28.70 | 358685766 | 0 |
| 21.97.28.71 | 358685767 | 0 |
| 21.97.28.72 | 358685768 | 0 |
| 21.97.28.73 | 358685769 | 0 |
| 21.97.28.74 | 358685770 | 0 |
| 21.97.28.75 | 358685771 | 0 |
| 21.97.28.76 | 358685772 | 0 |
| 21.97.28.77 | 358685773 | 0 |
| 21.97.28.78 | 358685774 | 0 |
| 21.97.28.79 | 358685775 | 0 |
| 21.97.28.80 | 358685776 | 0 |
| 21.97.28.81 | 358685777 | 0 |
| 21.97.28.82 | 358685778 | 0 |
| 21.97.28.83 | 358685779 | 0 |
| 21.97.28.84 | 358685780 | 0 |
| 21.97.28.85 | 358685781 | 0 |