Les adresses IP débutant par 21.85.55 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 | 21/11/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-11-21 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-11-21 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.85.55.0 | 357906176 | 0 |
| 21.85.55.1 | 357906177 | 0 |
| 21.85.55.2 | 357906178 | 0 |
| 21.85.55.3 | 357906179 | 0 |
| 21.85.55.4 | 357906180 | 0 |
| 21.85.55.5 | 357906181 | 0 |
| 21.85.55.6 | 357906182 | 0 |
| 21.85.55.7 | 357906183 | 0 |
| 21.85.55.8 | 357906184 | 0 |
| 21.85.55.9 | 357906185 | 0 |
| 21.85.55.10 | 357906186 | 0 |
| 21.85.55.11 | 357906187 | 0 |
| 21.85.55.12 | 357906188 | 0 |
| 21.85.55.13 | 357906189 | 0 |
| 21.85.55.14 | 357906190 | 0 |
| 21.85.55.15 | 357906191 | 0 |
| 21.85.55.16 | 357906192 | 0 |
| 21.85.55.17 | 357906193 | 0 |
| 21.85.55.18 | 357906194 | 0 |
| 21.85.55.19 | 357906195 | 0 |
| 21.85.55.20 | 357906196 | 0 |
| 21.85.55.21 | 357906197 | 0 |
| 21.85.55.22 | 357906198 | 0 |
| 21.85.55.23 | 357906199 | 0 |
| 21.85.55.24 | 357906200 | 0 |
| 21.85.55.25 | 357906201 | 0 |
| 21.85.55.26 | 357906202 | 0 |
| 21.85.55.27 | 357906203 | 0 |
| 21.85.55.28 | 357906204 | 0 |
| 21.85.55.29 | 357906205 | 0 |
| 21.85.55.30 | 357906206 | 0 |
| 21.85.55.31 | 357906207 | 0 |
| 21.85.55.32 | 357906208 | 0 |
| 21.85.55.33 | 357906209 | 0 |
| 21.85.55.34 | 357906210 | 0 |
| 21.85.55.35 | 357906211 | 0 |
| 21.85.55.36 | 357906212 | 0 |
| 21.85.55.37 | 357906213 | 0 |
| 21.85.55.38 | 357906214 | 0 |
| 21.85.55.39 | 357906215 | 0 |
| 21.85.55.40 | 357906216 | 0 |
| 21.85.55.41 | 357906217 | 0 |
| 21.85.55.42 | 357906218 | 0 |
| 21.85.55.43 | 357906219 | 0 |
| 21.85.55.44 | 357906220 | 0 |
| 21.85.55.45 | 357906221 | 0 |
| 21.85.55.46 | 357906222 | 0 |
| 21.85.55.47 | 357906223 | 0 |
| 21.85.55.48 | 357906224 | 0 |
| 21.85.55.49 | 357906225 | 0 |
| 21.85.55.50 | 357906226 | 0 |
| 21.85.55.51 | 357906227 | 0 |
| 21.85.55.52 | 357906228 | 0 |
| 21.85.55.53 | 357906229 | 0 |
| 21.85.55.54 | 357906230 | 0 |
| 21.85.55.55 | 357906231 | 0 |
| 21.85.55.56 | 357906232 | 0 |
| 21.85.55.57 | 357906233 | 0 |
| 21.85.55.58 | 357906234 | 0 |
| 21.85.55.59 | 357906235 | 0 |
| 21.85.55.60 | 357906236 | 0 |
| 21.85.55.61 | 357906237 | 0 |
| 21.85.55.62 | 357906238 | 0 |
| 21.85.55.63 | 357906239 | 0 |
| 21.85.55.64 | 357906240 | 0 |
| 21.85.55.65 | 357906241 | 0 |
| 21.85.55.66 | 357906242 | 0 |
| 21.85.55.67 | 357906243 | 0 |
| 21.85.55.68 | 357906244 | 0 |
| 21.85.55.69 | 357906245 | 0 |
| 21.85.55.70 | 357906246 | 0 |
| 21.85.55.71 | 357906247 | 0 |
| 21.85.55.72 | 357906248 | 0 |
| 21.85.55.73 | 357906249 | 0 |
| 21.85.55.74 | 357906250 | 0 |
| 21.85.55.75 | 357906251 | 0 |
| 21.85.55.76 | 357906252 | 0 |
| 21.85.55.77 | 357906253 | 0 |
| 21.85.55.78 | 357906254 | 0 |
| 21.85.55.79 | 357906255 | 0 |
| 21.85.55.80 | 357906256 | 0 |
| 21.85.55.81 | 357906257 | 0 |
| 21.85.55.82 | 357906258 | 0 |
| 21.85.55.83 | 357906259 | 0 |
| 21.85.55.84 | 357906260 | 0 |
| 21.85.55.85 | 357906261 | 0 |