La dirección IP 21.97.57 es proporcionada por China Education and Research Network Center, que es propiedad de la CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP entre 22.30.204.0 a 22.30.205.255 ). El número de sistema autónomo (ASN) es 4538.
| ASN | 4538 |
| IP que comienzan con | 22.30.204.0 |
| IP que termina con | 22.30.205.255 |
| ASN Nombre | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérica | |
| Registe | |
| Última actualización | 31/08/2018 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Houston | 29,7633 | -95,3633 | 2018-08-31 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2018-08-31 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.97.57.0 | 358693120 | 0 |
| 21.97.57.1 | 358693121 | 0 |
| 21.97.57.2 | 358693122 | 0 |
| 21.97.57.3 | 358693123 | 0 |
| 21.97.57.4 | 358693124 | 0 |
| 21.97.57.5 | 358693125 | 0 |
| 21.97.57.6 | 358693126 | 0 |
| 21.97.57.7 | 358693127 | 0 |
| 21.97.57.8 | 358693128 | 0 |
| 21.97.57.9 | 358693129 | 0 |
| 21.97.57.10 | 358693130 | 0 |
| 21.97.57.11 | 358693131 | 0 |
| 21.97.57.12 | 358693132 | 0 |
| 21.97.57.13 | 358693133 | 0 |
| 21.97.57.14 | 358693134 | 0 |
| 21.97.57.15 | 358693135 | 0 |
| 21.97.57.16 | 358693136 | 0 |
| 21.97.57.17 | 358693137 | 0 |
| 21.97.57.18 | 358693138 | 0 |
| 21.97.57.19 | 358693139 | 0 |
| 21.97.57.20 | 358693140 | 0 |
| 21.97.57.21 | 358693141 | 0 |
| 21.97.57.22 | 358693142 | 0 |
| 21.97.57.23 | 358693143 | 0 |
| 21.97.57.24 | 358693144 | 0 |
| 21.97.57.25 | 358693145 | 0 |
| 21.97.57.26 | 358693146 | 0 |
| 21.97.57.27 | 358693147 | 0 |
| 21.97.57.28 | 358693148 | 0 |
| 21.97.57.29 | 358693149 | 0 |
| 21.97.57.30 | 358693150 | 0 |
| 21.97.57.31 | 358693151 | 0 |
| 21.97.57.32 | 358693152 | 0 |
| 21.97.57.33 | 358693153 | 0 |
| 21.97.57.34 | 358693154 | 0 |
| 21.97.57.35 | 358693155 | 0 |
| 21.97.57.36 | 358693156 | 0 |
| 21.97.57.37 | 358693157 | 0 |
| 21.97.57.38 | 358693158 | 0 |
| 21.97.57.39 | 358693159 | 0 |
| 21.97.57.40 | 358693160 | 0 |
| 21.97.57.41 | 358693161 | 0 |
| 21.97.57.42 | 358693162 | 0 |
| 21.97.57.43 | 358693163 | 0 |
| 21.97.57.44 | 358693164 | 0 |
| 21.97.57.45 | 358693165 | 0 |
| 21.97.57.46 | 358693166 | 0 |
| 21.97.57.47 | 358693167 | 0 |
| 21.97.57.48 | 358693168 | 0 |
| 21.97.57.49 | 358693169 | 0 |
| 21.97.57.50 | 358693170 | 0 |
| 21.97.57.51 | 358693171 | 0 |
| 21.97.57.52 | 358693172 | 0 |
| 21.97.57.53 | 358693173 | 0 |
| 21.97.57.54 | 358693174 | 0 |
| 21.97.57.55 | 358693175 | 0 |
| 21.97.57.56 | 358693176 | 0 |
| 21.97.57.57 | 358693177 | 0 |
| 21.97.57.58 | 358693178 | 0 |
| 21.97.57.59 | 358693179 | 0 |
| 21.97.57.60 | 358693180 | 0 |
| 21.97.57.61 | 358693181 | 0 |
| 21.97.57.62 | 358693182 | 0 |
| 21.97.57.63 | 358693183 | 0 |
| 21.97.57.64 | 358693184 | 0 |
| 21.97.57.65 | 358693185 | 0 |
| 21.97.57.66 | 358693186 | 0 |
| 21.97.57.67 | 358693187 | 0 |
| 21.97.57.68 | 358693188 | 0 |
| 21.97.57.69 | 358693189 | 0 |
| 21.97.57.70 | 358693190 | 0 |
| 21.97.57.71 | 358693191 | 0 |
| 21.97.57.72 | 358693192 | 0 |
| 21.97.57.73 | 358693193 | 0 |
| 21.97.57.74 | 358693194 | 0 |
| 21.97.57.75 | 358693195 | 0 |
| 21.97.57.76 | 358693196 | 0 |
| 21.97.57.77 | 358693197 | 0 |
| 21.97.57.78 | 358693198 | 0 |
| 21.97.57.79 | 358693199 | 0 |
| 21.97.57.80 | 358693200 | 0 |
| 21.97.57.81 | 358693201 | 0 |
| 21.97.57.82 | 358693202 | 0 |
| 21.97.57.83 | 358693203 | 0 |
| 21.97.57.84 | 358693204 | 0 |
| 21.97.57.85 | 358693205 | 0 |