Les adresses IP débutant par 21.83.55 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 | 16/07/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-07-16 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-07-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.83.55.0 | 357775104 | 0 |
| 21.83.55.1 | 357775105 | 0 |
| 21.83.55.2 | 357775106 | 0 |
| 21.83.55.3 | 357775107 | 0 |
| 21.83.55.4 | 357775108 | 0 |
| 21.83.55.5 | 357775109 | 0 |
| 21.83.55.6 | 357775110 | 0 |
| 21.83.55.7 | 357775111 | 0 |
| 21.83.55.8 | 357775112 | 0 |
| 21.83.55.9 | 357775113 | 0 |
| 21.83.55.10 | 357775114 | 0 |
| 21.83.55.11 | 357775115 | 0 |
| 21.83.55.12 | 357775116 | 0 |
| 21.83.55.13 | 357775117 | 0 |
| 21.83.55.14 | 357775118 | 0 |
| 21.83.55.15 | 357775119 | 0 |
| 21.83.55.16 | 357775120 | 0 |
| 21.83.55.17 | 357775121 | 0 |
| 21.83.55.18 | 357775122 | 0 |
| 21.83.55.19 | 357775123 | 0 |
| 21.83.55.20 | 357775124 | 0 |
| 21.83.55.21 | 357775125 | 0 |
| 21.83.55.22 | 357775126 | 0 |
| 21.83.55.23 | 357775127 | 0 |
| 21.83.55.24 | 357775128 | 0 |
| 21.83.55.25 | 357775129 | 0 |
| 21.83.55.26 | 357775130 | 0 |
| 21.83.55.27 | 357775131 | 0 |
| 21.83.55.28 | 357775132 | 0 |
| 21.83.55.29 | 357775133 | 0 |
| 21.83.55.30 | 357775134 | 0 |
| 21.83.55.31 | 357775135 | 0 |
| 21.83.55.32 | 357775136 | 0 |
| 21.83.55.33 | 357775137 | 0 |
| 21.83.55.34 | 357775138 | 0 |
| 21.83.55.35 | 357775139 | 0 |
| 21.83.55.36 | 357775140 | 0 |
| 21.83.55.37 | 357775141 | 0 |
| 21.83.55.38 | 357775142 | 0 |
| 21.83.55.39 | 357775143 | 0 |
| 21.83.55.40 | 357775144 | 0 |
| 21.83.55.41 | 357775145 | 0 |
| 21.83.55.42 | 357775146 | 0 |
| 21.83.55.43 | 357775147 | 0 |
| 21.83.55.44 | 357775148 | 0 |
| 21.83.55.45 | 357775149 | 0 |
| 21.83.55.46 | 357775150 | 0 |
| 21.83.55.47 | 357775151 | 0 |
| 21.83.55.48 | 357775152 | 0 |
| 21.83.55.49 | 357775153 | 0 |
| 21.83.55.50 | 357775154 | 0 |
| 21.83.55.51 | 357775155 | 0 |
| 21.83.55.52 | 357775156 | 0 |
| 21.83.55.53 | 357775157 | 0 |
| 21.83.55.54 | 357775158 | 0 |
| 21.83.55.55 | 357775159 | 0 |
| 21.83.55.56 | 357775160 | 0 |
| 21.83.55.57 | 357775161 | 0 |
| 21.83.55.58 | 357775162 | 0 |
| 21.83.55.59 | 357775163 | 0 |
| 21.83.55.60 | 357775164 | 0 |
| 21.83.55.61 | 357775165 | 0 |
| 21.83.55.62 | 357775166 | 0 |
| 21.83.55.63 | 357775167 | 0 |
| 21.83.55.64 | 357775168 | 0 |
| 21.83.55.65 | 357775169 | 0 |
| 21.83.55.66 | 357775170 | 0 |
| 21.83.55.67 | 357775171 | 0 |
| 21.83.55.68 | 357775172 | 0 |
| 21.83.55.69 | 357775173 | 0 |
| 21.83.55.70 | 357775174 | 0 |
| 21.83.55.71 | 357775175 | 0 |
| 21.83.55.72 | 357775176 | 0 |
| 21.83.55.73 | 357775177 | 0 |
| 21.83.55.74 | 357775178 | 0 |
| 21.83.55.75 | 357775179 | 0 |
| 21.83.55.76 | 357775180 | 0 |
| 21.83.55.77 | 357775181 | 0 |
| 21.83.55.78 | 357775182 | 0 |
| 21.83.55.79 | 357775183 | 0 |
| 21.83.55.80 | 357775184 | 0 |
| 21.83.55.81 | 357775185 | 0 |
| 21.83.55.82 | 357775186 | 0 |
| 21.83.55.83 | 357775187 | 0 |
| 21.83.55.84 | 357775188 | 0 |
| 21.83.55.85 | 357775189 | 0 |