The IP address 21.243.4 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 | 28/08/2019 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | ES | Spain | - | Madrid | 40.4165 | -3.7026 | 2019-08-28 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2019-08-28 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.243.4.0 | 368247808 | 0 |
| 21.243.4.1 | 368247809 | 0 |
| 21.243.4.2 | 368247810 | 0 |
| 21.243.4.3 | 368247811 | 0 |
| 21.243.4.4 | 368247812 | 0 |
| 21.243.4.5 | 368247813 | 0 |
| 21.243.4.6 | 368247814 | 0 |
| 21.243.4.7 | 368247815 | 0 |
| 21.243.4.8 | 368247816 | 0 |
| 21.243.4.9 | 368247817 | 0 |
| 21.243.4.10 | 368247818 | 0 |
| 21.243.4.11 | 368247819 | 0 |
| 21.243.4.12 | 368247820 | 0 |
| 21.243.4.13 | 368247821 | 0 |
| 21.243.4.14 | 368247822 | 0 |
| 21.243.4.15 | 368247823 | 0 |
| 21.243.4.16 | 368247824 | 0 |
| 21.243.4.17 | 368247825 | 0 |
| 21.243.4.18 | 368247826 | 0 |
| 21.243.4.19 | 368247827 | 0 |
| 21.243.4.20 | 368247828 | 0 |
| 21.243.4.21 | 368247829 | 0 |
| 21.243.4.22 | 368247830 | 0 |
| 21.243.4.23 | 368247831 | 0 |
| 21.243.4.24 | 368247832 | 0 |
| 21.243.4.25 | 368247833 | 0 |
| 21.243.4.26 | 368247834 | 0 |
| 21.243.4.27 | 368247835 | 0 |
| 21.243.4.28 | 368247836 | 0 |
| 21.243.4.29 | 368247837 | 0 |
| 21.243.4.30 | 368247838 | 0 |
| 21.243.4.31 | 368247839 | 0 |
| 21.243.4.32 | 368247840 | 0 |
| 21.243.4.33 | 368247841 | 0 |
| 21.243.4.34 | 368247842 | 0 |
| 21.243.4.35 | 368247843 | 0 |
| 21.243.4.36 | 368247844 | 0 |
| 21.243.4.37 | 368247845 | 0 |
| 21.243.4.38 | 368247846 | 0 |
| 21.243.4.39 | 368247847 | 0 |
| 21.243.4.40 | 368247848 | 0 |
| 21.243.4.41 | 368247849 | 0 |
| 21.243.4.42 | 368247850 | 0 |
| 21.243.4.43 | 368247851 | 0 |
| 21.243.4.44 | 368247852 | 0 |
| 21.243.4.45 | 368247853 | 0 |
| 21.243.4.46 | 368247854 | 0 |
| 21.243.4.47 | 368247855 | 0 |
| 21.243.4.48 | 368247856 | 0 |
| 21.243.4.49 | 368247857 | 0 |
| 21.243.4.50 | 368247858 | 0 |
| 21.243.4.51 | 368247859 | 0 |
| 21.243.4.52 | 368247860 | 0 |
| 21.243.4.53 | 368247861 | 0 |
| 21.243.4.54 | 368247862 | 0 |
| 21.243.4.55 | 368247863 | 0 |
| 21.243.4.56 | 368247864 | 0 |
| 21.243.4.57 | 368247865 | 0 |
| 21.243.4.58 | 368247866 | 0 |
| 21.243.4.59 | 368247867 | 0 |
| 21.243.4.60 | 368247868 | 0 |
| 21.243.4.61 | 368247869 | 0 |
| 21.243.4.62 | 368247870 | 0 |
| 21.243.4.63 | 368247871 | 0 |
| 21.243.4.64 | 368247872 | 0 |
| 21.243.4.65 | 368247873 | 0 |
| 21.243.4.66 | 368247874 | 0 |
| 21.243.4.67 | 368247875 | 0 |
| 21.243.4.68 | 368247876 | 0 |
| 21.243.4.69 | 368247877 | 0 |
| 21.243.4.70 | 368247878 | 0 |
| 21.243.4.71 | 368247879 | 0 |
| 21.243.4.72 | 368247880 | 0 |
| 21.243.4.73 | 368247881 | 0 |
| 21.243.4.74 | 368247882 | 0 |
| 21.243.4.75 | 368247883 | 0 |
| 21.243.4.76 | 368247884 | 0 |
| 21.243.4.77 | 368247885 | 0 |
| 21.243.4.78 | 368247886 | 0 |
| 21.243.4.79 | 368247887 | 0 |
| 21.243.4.80 | 368247888 | 0 |
| 21.243.4.81 | 368247889 | 0 |
| 21.243.4.82 | 368247890 | 0 |
| 21.243.4.83 | 368247891 | 0 |
| 21.243.4.84 | 368247892 | 0 |
| 21.243.4.85 | 368247893 | 0 |