Les adresses IP débutant par 21.79.40 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 | 23/10/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-10-23 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-10-23 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.79.40.0 | 357509120 | 0 |
| 21.79.40.1 | 357509121 | 0 |
| 21.79.40.2 | 357509122 | 0 |
| 21.79.40.3 | 357509123 | 0 |
| 21.79.40.4 | 357509124 | 0 |
| 21.79.40.5 | 357509125 | 0 |
| 21.79.40.6 | 357509126 | 0 |
| 21.79.40.7 | 357509127 | 0 |
| 21.79.40.8 | 357509128 | 0 |
| 21.79.40.9 | 357509129 | 0 |
| 21.79.40.10 | 357509130 | 0 |
| 21.79.40.11 | 357509131 | 0 |
| 21.79.40.12 | 357509132 | 0 |
| 21.79.40.13 | 357509133 | 0 |
| 21.79.40.14 | 357509134 | 0 |
| 21.79.40.15 | 357509135 | 0 |
| 21.79.40.16 | 357509136 | 0 |
| 21.79.40.17 | 357509137 | 0 |
| 21.79.40.18 | 357509138 | 0 |
| 21.79.40.19 | 357509139 | 0 |
| 21.79.40.20 | 357509140 | 0 |
| 21.79.40.21 | 357509141 | 0 |
| 21.79.40.22 | 357509142 | 0 |
| 21.79.40.23 | 357509143 | 0 |
| 21.79.40.24 | 357509144 | 0 |
| 21.79.40.25 | 357509145 | 0 |
| 21.79.40.26 | 357509146 | 0 |
| 21.79.40.27 | 357509147 | 0 |
| 21.79.40.28 | 357509148 | 0 |
| 21.79.40.29 | 357509149 | 0 |
| 21.79.40.30 | 357509150 | 0 |
| 21.79.40.31 | 357509151 | 0 |
| 21.79.40.32 | 357509152 | 0 |
| 21.79.40.33 | 357509153 | 0 |
| 21.79.40.34 | 357509154 | 0 |
| 21.79.40.35 | 357509155 | 0 |
| 21.79.40.36 | 357509156 | 0 |
| 21.79.40.37 | 357509157 | 0 |
| 21.79.40.38 | 357509158 | 0 |
| 21.79.40.39 | 357509159 | 0 |
| 21.79.40.40 | 357509160 | 0 |
| 21.79.40.41 | 357509161 | 0 |
| 21.79.40.42 | 357509162 | 0 |
| 21.79.40.43 | 357509163 | 0 |
| 21.79.40.44 | 357509164 | 0 |
| 21.79.40.45 | 357509165 | 0 |
| 21.79.40.46 | 357509166 | 0 |
| 21.79.40.47 | 357509167 | 0 |
| 21.79.40.48 | 357509168 | 0 |
| 21.79.40.49 | 357509169 | 0 |
| 21.79.40.50 | 357509170 | 0 |
| 21.79.40.51 | 357509171 | 0 |
| 21.79.40.52 | 357509172 | 0 |
| 21.79.40.53 | 357509173 | 0 |
| 21.79.40.54 | 357509174 | 0 |
| 21.79.40.55 | 357509175 | 0 |
| 21.79.40.56 | 357509176 | 0 |
| 21.79.40.57 | 357509177 | 0 |
| 21.79.40.58 | 357509178 | 0 |
| 21.79.40.59 | 357509179 | 0 |
| 21.79.40.60 | 357509180 | 0 |
| 21.79.40.61 | 357509181 | 0 |
| 21.79.40.62 | 357509182 | 0 |
| 21.79.40.63 | 357509183 | 0 |
| 21.79.40.64 | 357509184 | 0 |
| 21.79.40.65 | 357509185 | 0 |
| 21.79.40.66 | 357509186 | 0 |
| 21.79.40.67 | 357509187 | 0 |
| 21.79.40.68 | 357509188 | 0 |
| 21.79.40.69 | 357509189 | 0 |
| 21.79.40.70 | 357509190 | 0 |
| 21.79.40.71 | 357509191 | 0 |
| 21.79.40.72 | 357509192 | 0 |
| 21.79.40.73 | 357509193 | 0 |
| 21.79.40.74 | 357509194 | 0 |
| 21.79.40.75 | 357509195 | 0 |
| 21.79.40.76 | 357509196 | 0 |
| 21.79.40.77 | 357509197 | 0 |
| 21.79.40.78 | 357509198 | 0 |
| 21.79.40.79 | 357509199 | 0 |
| 21.79.40.80 | 357509200 | 0 |
| 21.79.40.81 | 357509201 | 0 |
| 21.79.40.82 | 357509202 | 0 |
| 21.79.40.83 | 357509203 | 0 |
| 21.79.40.84 | 357509204 | 0 |
| 21.79.40.85 | 357509205 | 0 |