The IP address 21.243.0 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 | 27/01/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2018-01-26 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-01-26 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.243.0.0 | 368246784 | 0 |
| 21.243.0.1 | 368246785 | 0 |
| 21.243.0.2 | 368246786 | 0 |
| 21.243.0.3 | 368246787 | 0 |
| 21.243.0.4 | 368246788 | 0 |
| 21.243.0.5 | 368246789 | 0 |
| 21.243.0.6 | 368246790 | 0 |
| 21.243.0.7 | 368246791 | 0 |
| 21.243.0.8 | 368246792 | 0 |
| 21.243.0.9 | 368246793 | 0 |
| 21.243.0.10 | 368246794 | 0 |
| 21.243.0.11 | 368246795 | 0 |
| 21.243.0.12 | 368246796 | 0 |
| 21.243.0.13 | 368246797 | 0 |
| 21.243.0.14 | 368246798 | 0 |
| 21.243.0.15 | 368246799 | 0 |
| 21.243.0.16 | 368246800 | 0 |
| 21.243.0.17 | 368246801 | 0 |
| 21.243.0.18 | 368246802 | 0 |
| 21.243.0.19 | 368246803 | 0 |
| 21.243.0.20 | 368246804 | 0 |
| 21.243.0.21 | 368246805 | 0 |
| 21.243.0.22 | 368246806 | 0 |
| 21.243.0.23 | 368246807 | 0 |
| 21.243.0.24 | 368246808 | 0 |
| 21.243.0.25 | 368246809 | 0 |
| 21.243.0.26 | 368246810 | 0 |
| 21.243.0.27 | 368246811 | 0 |
| 21.243.0.28 | 368246812 | 0 |
| 21.243.0.29 | 368246813 | 0 |
| 21.243.0.30 | 368246814 | 0 |
| 21.243.0.31 | 368246815 | 0 |
| 21.243.0.32 | 368246816 | 0 |
| 21.243.0.33 | 368246817 | 0 |
| 21.243.0.34 | 368246818 | 0 |
| 21.243.0.35 | 368246819 | 0 |
| 21.243.0.36 | 368246820 | 0 |
| 21.243.0.37 | 368246821 | 0 |
| 21.243.0.38 | 368246822 | 0 |
| 21.243.0.39 | 368246823 | 0 |
| 21.243.0.40 | 368246824 | 0 |
| 21.243.0.41 | 368246825 | 0 |
| 21.243.0.42 | 368246826 | 0 |
| 21.243.0.43 | 368246827 | 0 |
| 21.243.0.44 | 368246828 | 0 |
| 21.243.0.45 | 368246829 | 0 |
| 21.243.0.46 | 368246830 | 0 |
| 21.243.0.47 | 368246831 | 0 |
| 21.243.0.48 | 368246832 | 0 |
| 21.243.0.49 | 368246833 | 0 |
| 21.243.0.50 | 368246834 | 0 |
| 21.243.0.51 | 368246835 | 0 |
| 21.243.0.52 | 368246836 | 0 |
| 21.243.0.53 | 368246837 | 0 |
| 21.243.0.54 | 368246838 | 0 |
| 21.243.0.55 | 368246839 | 0 |
| 21.243.0.56 | 368246840 | 0 |
| 21.243.0.57 | 368246841 | 0 |
| 21.243.0.58 | 368246842 | 0 |
| 21.243.0.59 | 368246843 | 0 |
| 21.243.0.60 | 368246844 | 0 |
| 21.243.0.61 | 368246845 | 0 |
| 21.243.0.62 | 368246846 | 0 |
| 21.243.0.63 | 368246847 | 0 |
| 21.243.0.64 | 368246848 | 0 |
| 21.243.0.65 | 368246849 | 0 |
| 21.243.0.66 | 368246850 | 0 |
| 21.243.0.67 | 368246851 | 0 |
| 21.243.0.68 | 368246852 | 0 |
| 21.243.0.69 | 368246853 | 0 |
| 21.243.0.70 | 368246854 | 0 |
| 21.243.0.71 | 368246855 | 0 |
| 21.243.0.72 | 368246856 | 0 |
| 21.243.0.73 | 368246857 | 0 |
| 21.243.0.74 | 368246858 | 0 |
| 21.243.0.75 | 368246859 | 0 |
| 21.243.0.76 | 368246860 | 0 |
| 21.243.0.77 | 368246861 | 0 |
| 21.243.0.78 | 368246862 | 0 |
| 21.243.0.79 | 368246863 | 0 |
| 21.243.0.80 | 368246864 | 0 |
| 21.243.0.81 | 368246865 | 0 |
| 21.243.0.82 | 368246866 | 0 |
| 21.243.0.83 | 368246867 | 0 |
| 21.243.0.84 | 368246868 | 0 |
| 21.243.0.85 | 368246869 | 0 |