Les adresses IP débutant par 21.90.76 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 | 16/09/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-09-16 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-09-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.90.76.0 | 358239232 | 0 |
| 21.90.76.1 | 358239233 | 0 |
| 21.90.76.2 | 358239234 | 0 |
| 21.90.76.3 | 358239235 | 0 |
| 21.90.76.4 | 358239236 | 0 |
| 21.90.76.5 | 358239237 | 0 |
| 21.90.76.6 | 358239238 | 0 |
| 21.90.76.7 | 358239239 | 0 |
| 21.90.76.8 | 358239240 | 0 |
| 21.90.76.9 | 358239241 | 0 |
| 21.90.76.10 | 358239242 | 0 |
| 21.90.76.11 | 358239243 | 0 |
| 21.90.76.12 | 358239244 | 0 |
| 21.90.76.13 | 358239245 | 0 |
| 21.90.76.14 | 358239246 | 0 |
| 21.90.76.15 | 358239247 | 0 |
| 21.90.76.16 | 358239248 | 0 |
| 21.90.76.17 | 358239249 | 0 |
| 21.90.76.18 | 358239250 | 0 |
| 21.90.76.19 | 358239251 | 0 |
| 21.90.76.20 | 358239252 | 0 |
| 21.90.76.21 | 358239253 | 0 |
| 21.90.76.22 | 358239254 | 0 |
| 21.90.76.23 | 358239255 | 0 |
| 21.90.76.24 | 358239256 | 0 |
| 21.90.76.25 | 358239257 | 0 |
| 21.90.76.26 | 358239258 | 0 |
| 21.90.76.27 | 358239259 | 0 |
| 21.90.76.28 | 358239260 | 0 |
| 21.90.76.29 | 358239261 | 0 |
| 21.90.76.30 | 358239262 | 0 |
| 21.90.76.31 | 358239263 | 0 |
| 21.90.76.32 | 358239264 | 0 |
| 21.90.76.33 | 358239265 | 0 |
| 21.90.76.34 | 358239266 | 0 |
| 21.90.76.35 | 358239267 | 0 |
| 21.90.76.36 | 358239268 | 0 |
| 21.90.76.37 | 358239269 | 0 |
| 21.90.76.38 | 358239270 | 0 |
| 21.90.76.39 | 358239271 | 0 |
| 21.90.76.40 | 358239272 | 0 |
| 21.90.76.41 | 358239273 | 0 |
| 21.90.76.42 | 358239274 | 0 |
| 21.90.76.43 | 358239275 | 0 |
| 21.90.76.44 | 358239276 | 0 |
| 21.90.76.45 | 358239277 | 0 |
| 21.90.76.46 | 358239278 | 0 |
| 21.90.76.47 | 358239279 | 0 |
| 21.90.76.48 | 358239280 | 0 |
| 21.90.76.49 | 358239281 | 0 |
| 21.90.76.50 | 358239282 | 0 |
| 21.90.76.51 | 358239283 | 0 |
| 21.90.76.52 | 358239284 | 0 |
| 21.90.76.53 | 358239285 | 0 |
| 21.90.76.54 | 358239286 | 0 |
| 21.90.76.55 | 358239287 | 0 |
| 21.90.76.56 | 358239288 | 0 |
| 21.90.76.57 | 358239289 | 0 |
| 21.90.76.58 | 358239290 | 0 |
| 21.90.76.59 | 358239291 | 0 |
| 21.90.76.60 | 358239292 | 0 |
| 21.90.76.61 | 358239293 | 0 |
| 21.90.76.62 | 358239294 | 0 |
| 21.90.76.63 | 358239295 | 0 |
| 21.90.76.64 | 358239296 | 0 |
| 21.90.76.65 | 358239297 | 0 |
| 21.90.76.66 | 358239298 | 0 |
| 21.90.76.67 | 358239299 | 0 |
| 21.90.76.68 | 358239300 | 0 |
| 21.90.76.69 | 358239301 | 0 |
| 21.90.76.70 | 358239302 | 0 |
| 21.90.76.71 | 358239303 | 0 |
| 21.90.76.72 | 358239304 | 0 |
| 21.90.76.73 | 358239305 | 0 |
| 21.90.76.74 | 358239306 | 0 |
| 21.90.76.75 | 358239307 | 0 |
| 21.90.76.76 | 358239308 | 0 |
| 21.90.76.77 | 358239309 | 0 |
| 21.90.76.78 | 358239310 | 0 |
| 21.90.76.79 | 358239311 | 0 |
| 21.90.76.80 | 358239312 | 0 |
| 21.90.76.81 | 358239313 | 0 |
| 21.90.76.82 | 358239314 | 0 |
| 21.90.76.83 | 358239315 | 0 |
| 21.90.76.84 | 358239316 | 0 |
| 21.90.76.85 | 358239317 | 0 |