Les adresses IP débutant par 21.72.78 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 | 30/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-08-29 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-08-29 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.72.78.0 | 357060096 | 0 |
| 21.72.78.1 | 357060097 | 0 |
| 21.72.78.2 | 357060098 | 0 |
| 21.72.78.3 | 357060099 | 0 |
| 21.72.78.4 | 357060100 | 0 |
| 21.72.78.5 | 357060101 | 0 |
| 21.72.78.6 | 357060102 | 0 |
| 21.72.78.7 | 357060103 | 0 |
| 21.72.78.8 | 357060104 | 0 |
| 21.72.78.9 | 357060105 | 0 |
| 21.72.78.10 | 357060106 | 0 |
| 21.72.78.11 | 357060107 | 0 |
| 21.72.78.12 | 357060108 | 0 |
| 21.72.78.13 | 357060109 | 0 |
| 21.72.78.14 | 357060110 | 0 |
| 21.72.78.15 | 357060111 | 0 |
| 21.72.78.16 | 357060112 | 0 |
| 21.72.78.17 | 357060113 | 0 |
| 21.72.78.18 | 357060114 | 0 |
| 21.72.78.19 | 357060115 | 0 |
| 21.72.78.20 | 357060116 | 0 |
| 21.72.78.21 | 357060117 | 0 |
| 21.72.78.22 | 357060118 | 0 |
| 21.72.78.23 | 357060119 | 0 |
| 21.72.78.24 | 357060120 | 0 |
| 21.72.78.25 | 357060121 | 0 |
| 21.72.78.26 | 357060122 | 0 |
| 21.72.78.27 | 357060123 | 0 |
| 21.72.78.28 | 357060124 | 0 |
| 21.72.78.29 | 357060125 | 0 |
| 21.72.78.30 | 357060126 | 0 |
| 21.72.78.31 | 357060127 | 0 |
| 21.72.78.32 | 357060128 | 0 |
| 21.72.78.33 | 357060129 | 0 |
| 21.72.78.34 | 357060130 | 0 |
| 21.72.78.35 | 357060131 | 0 |
| 21.72.78.36 | 357060132 | 0 |
| 21.72.78.37 | 357060133 | 0 |
| 21.72.78.38 | 357060134 | 0 |
| 21.72.78.39 | 357060135 | 0 |
| 21.72.78.40 | 357060136 | 0 |
| 21.72.78.41 | 357060137 | 0 |
| 21.72.78.42 | 357060138 | 0 |
| 21.72.78.43 | 357060139 | 0 |
| 21.72.78.44 | 357060140 | 0 |
| 21.72.78.45 | 357060141 | 0 |
| 21.72.78.46 | 357060142 | 0 |
| 21.72.78.47 | 357060143 | 0 |
| 21.72.78.48 | 357060144 | 0 |
| 21.72.78.49 | 357060145 | 0 |
| 21.72.78.50 | 357060146 | 0 |
| 21.72.78.51 | 357060147 | 0 |
| 21.72.78.52 | 357060148 | 0 |
| 21.72.78.53 | 357060149 | 0 |
| 21.72.78.54 | 357060150 | 0 |
| 21.72.78.55 | 357060151 | 0 |
| 21.72.78.56 | 357060152 | 0 |
| 21.72.78.57 | 357060153 | 0 |
| 21.72.78.58 | 357060154 | 0 |
| 21.72.78.59 | 357060155 | 0 |
| 21.72.78.60 | 357060156 | 0 |
| 21.72.78.61 | 357060157 | 0 |
| 21.72.78.62 | 357060158 | 0 |
| 21.72.78.63 | 357060159 | 0 |
| 21.72.78.64 | 357060160 | 0 |
| 21.72.78.65 | 357060161 | 0 |
| 21.72.78.66 | 357060162 | 0 |
| 21.72.78.67 | 357060163 | 0 |
| 21.72.78.68 | 357060164 | 0 |
| 21.72.78.69 | 357060165 | 0 |
| 21.72.78.70 | 357060166 | 0 |
| 21.72.78.71 | 357060167 | 0 |
| 21.72.78.72 | 357060168 | 0 |
| 21.72.78.73 | 357060169 | 0 |
| 21.72.78.74 | 357060170 | 0 |
| 21.72.78.75 | 357060171 | 0 |
| 21.72.78.76 | 357060172 | 0 |
| 21.72.78.77 | 357060173 | 0 |
| 21.72.78.78 | 357060174 | 0 |
| 21.72.78.79 | 357060175 | 0 |
| 21.72.78.80 | 357060176 | 0 |
| 21.72.78.81 | 357060177 | 0 |
| 21.72.78.82 | 357060178 | 0 |
| 21.72.78.83 | 357060179 | 0 |
| 21.72.78.84 | 357060180 | 0 |
| 21.72.78.85 | 357060181 | 0 |