Les adresses IP débutant par 21.88.63 sont fournies par China Education and Research Network Center, elles appartiennent au CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, le bloc IP comprant les adresses de 22.30.204.0 à 22.30.205.255). Le numéro de système autonome (ASN) est 4538.
| ASN | 4538 |
| IP commençant par | 22.30.204.0 |
| IP se terminant par | 22.30.205.255 |
| Nom ASN | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérique | |
| Registe | |
| Dernière mise à jour | 29/03/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2018-03-29 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2018-03-29 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.88.63.0 | 358104832 | 0 |
| 21.88.63.1 | 358104833 | 0 |
| 21.88.63.2 | 358104834 | 0 |
| 21.88.63.3 | 358104835 | 0 |
| 21.88.63.4 | 358104836 | 0 |
| 21.88.63.5 | 358104837 | 0 |
| 21.88.63.6 | 358104838 | 0 |
| 21.88.63.7 | 358104839 | 0 |
| 21.88.63.8 | 358104840 | 0 |
| 21.88.63.9 | 358104841 | 0 |
| 21.88.63.10 | 358104842 | 0 |
| 21.88.63.11 | 358104843 | 0 |
| 21.88.63.12 | 358104844 | 0 |
| 21.88.63.13 | 358104845 | 0 |
| 21.88.63.14 | 358104846 | 0 |
| 21.88.63.15 | 358104847 | 0 |
| 21.88.63.16 | 358104848 | 0 |
| 21.88.63.17 | 358104849 | 0 |
| 21.88.63.18 | 358104850 | 0 |
| 21.88.63.19 | 358104851 | 0 |
| 21.88.63.20 | 358104852 | 0 |
| 21.88.63.21 | 358104853 | 0 |
| 21.88.63.22 | 358104854 | 0 |
| 21.88.63.23 | 358104855 | 0 |
| 21.88.63.24 | 358104856 | 0 |
| 21.88.63.25 | 358104857 | 0 |
| 21.88.63.26 | 358104858 | 0 |
| 21.88.63.27 | 358104859 | 0 |
| 21.88.63.28 | 358104860 | 0 |
| 21.88.63.29 | 358104861 | 0 |
| 21.88.63.30 | 358104862 | 0 |
| 21.88.63.31 | 358104863 | 0 |
| 21.88.63.32 | 358104864 | 0 |
| 21.88.63.33 | 358104865 | 0 |
| 21.88.63.34 | 358104866 | 0 |
| 21.88.63.35 | 358104867 | 0 |
| 21.88.63.36 | 358104868 | 0 |
| 21.88.63.37 | 358104869 | 0 |
| 21.88.63.38 | 358104870 | 0 |
| 21.88.63.39 | 358104871 | 0 |
| 21.88.63.40 | 358104872 | 0 |
| 21.88.63.41 | 358104873 | 0 |
| 21.88.63.42 | 358104874 | 0 |
| 21.88.63.43 | 358104875 | 0 |
| 21.88.63.44 | 358104876 | 0 |
| 21.88.63.45 | 358104877 | 0 |
| 21.88.63.46 | 358104878 | 0 |
| 21.88.63.47 | 358104879 | 0 |
| 21.88.63.48 | 358104880 | 0 |
| 21.88.63.49 | 358104881 | 0 |
| 21.88.63.50 | 358104882 | 0 |
| 21.88.63.51 | 358104883 | 0 |
| 21.88.63.52 | 358104884 | 0 |
| 21.88.63.53 | 358104885 | 0 |
| 21.88.63.54 | 358104886 | 0 |
| 21.88.63.55 | 358104887 | 0 |
| 21.88.63.56 | 358104888 | 0 |
| 21.88.63.57 | 358104889 | 0 |
| 21.88.63.58 | 358104890 | 0 |
| 21.88.63.59 | 358104891 | 0 |
| 21.88.63.60 | 358104892 | 0 |
| 21.88.63.61 | 358104893 | 0 |
| 21.88.63.62 | 358104894 | 0 |
| 21.88.63.63 | 358104895 | 0 |
| 21.88.63.64 | 358104896 | 0 |
| 21.88.63.65 | 358104897 | 0 |
| 21.88.63.66 | 358104898 | 0 |
| 21.88.63.67 | 358104899 | 0 |
| 21.88.63.68 | 358104900 | 0 |
| 21.88.63.69 | 358104901 | 0 |
| 21.88.63.70 | 358104902 | 0 |
| 21.88.63.71 | 358104903 | 0 |
| 21.88.63.72 | 358104904 | 0 |
| 21.88.63.73 | 358104905 | 0 |
| 21.88.63.74 | 358104906 | 0 |
| 21.88.63.75 | 358104907 | 0 |
| 21.88.63.76 | 358104908 | 0 |
| 21.88.63.77 | 358104909 | 0 |
| 21.88.63.78 | 358104910 | 0 |
| 21.88.63.79 | 358104911 | 0 |
| 21.88.63.80 | 358104912 | 0 |
| 21.88.63.81 | 358104913 | 0 |
| 21.88.63.82 | 358104914 | 0 |
| 21.88.63.83 | 358104915 | 0 |
| 21.88.63.84 | 358104916 | 0 |
| 21.88.63.85 | 358104917 | 0 |