Les adresses IP débutant par 21.87.70 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 | 06/08/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Houston | 29,7633 | -95,3633 | 2018-08-06 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2018-08-06 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.87.70.0 | 358041088 | 0 |
| 21.87.70.1 | 358041089 | 0 |
| 21.87.70.2 | 358041090 | 0 |
| 21.87.70.3 | 358041091 | 0 |
| 21.87.70.4 | 358041092 | 0 |
| 21.87.70.5 | 358041093 | 0 |
| 21.87.70.6 | 358041094 | 0 |
| 21.87.70.7 | 358041095 | 0 |
| 21.87.70.8 | 358041096 | 0 |
| 21.87.70.9 | 358041097 | 0 |
| 21.87.70.10 | 358041098 | 0 |
| 21.87.70.11 | 358041099 | 0 |
| 21.87.70.12 | 358041100 | 0 |
| 21.87.70.13 | 358041101 | 0 |
| 21.87.70.14 | 358041102 | 0 |
| 21.87.70.15 | 358041103 | 0 |
| 21.87.70.16 | 358041104 | 0 |
| 21.87.70.17 | 358041105 | 0 |
| 21.87.70.18 | 358041106 | 0 |
| 21.87.70.19 | 358041107 | 0 |
| 21.87.70.20 | 358041108 | 0 |
| 21.87.70.21 | 358041109 | 0 |
| 21.87.70.22 | 358041110 | 0 |
| 21.87.70.23 | 358041111 | 0 |
| 21.87.70.24 | 358041112 | 0 |
| 21.87.70.25 | 358041113 | 0 |
| 21.87.70.26 | 358041114 | 0 |
| 21.87.70.27 | 358041115 | 0 |
| 21.87.70.28 | 358041116 | 0 |
| 21.87.70.29 | 358041117 | 0 |
| 21.87.70.30 | 358041118 | 0 |
| 21.87.70.31 | 358041119 | 0 |
| 21.87.70.32 | 358041120 | 0 |
| 21.87.70.33 | 358041121 | 0 |
| 21.87.70.34 | 358041122 | 0 |
| 21.87.70.35 | 358041123 | 0 |
| 21.87.70.36 | 358041124 | 0 |
| 21.87.70.37 | 358041125 | 0 |
| 21.87.70.38 | 358041126 | 0 |
| 21.87.70.39 | 358041127 | 0 |
| 21.87.70.40 | 358041128 | 0 |
| 21.87.70.41 | 358041129 | 0 |
| 21.87.70.42 | 358041130 | 0 |
| 21.87.70.43 | 358041131 | 0 |
| 21.87.70.44 | 358041132 | 0 |
| 21.87.70.45 | 358041133 | 0 |
| 21.87.70.46 | 358041134 | 0 |
| 21.87.70.47 | 358041135 | 0 |
| 21.87.70.48 | 358041136 | 0 |
| 21.87.70.49 | 358041137 | 0 |
| 21.87.70.50 | 358041138 | 0 |
| 21.87.70.51 | 358041139 | 0 |
| 21.87.70.52 | 358041140 | 0 |
| 21.87.70.53 | 358041141 | 0 |
| 21.87.70.54 | 358041142 | 0 |
| 21.87.70.55 | 358041143 | 0 |
| 21.87.70.56 | 358041144 | 0 |
| 21.87.70.57 | 358041145 | 0 |
| 21.87.70.58 | 358041146 | 0 |
| 21.87.70.59 | 358041147 | 0 |
| 21.87.70.60 | 358041148 | 0 |
| 21.87.70.61 | 358041149 | 0 |
| 21.87.70.62 | 358041150 | 0 |
| 21.87.70.63 | 358041151 | 0 |
| 21.87.70.64 | 358041152 | 0 |
| 21.87.70.65 | 358041153 | 0 |
| 21.87.70.66 | 358041154 | 0 |
| 21.87.70.67 | 358041155 | 0 |
| 21.87.70.68 | 358041156 | 0 |
| 21.87.70.69 | 358041157 | 0 |
| 21.87.70.70 | 358041158 | 0 |
| 21.87.70.71 | 358041159 | 0 |
| 21.87.70.72 | 358041160 | 0 |
| 21.87.70.73 | 358041161 | 0 |
| 21.87.70.74 | 358041162 | 0 |
| 21.87.70.75 | 358041163 | 0 |
| 21.87.70.76 | 358041164 | 0 |
| 21.87.70.77 | 358041165 | 0 |
| 21.87.70.78 | 358041166 | 0 |
| 21.87.70.79 | 358041167 | 0 |
| 21.87.70.80 | 358041168 | 0 |
| 21.87.70.81 | 358041169 | 0 |
| 21.87.70.82 | 358041170 | 0 |
| 21.87.70.83 | 358041171 | 0 |
| 21.87.70.84 | 358041172 | 0 |
| 21.87.70.85 | 358041173 | 0 |