The IP address 21.76.66 is provided by China Education and Research Network Center, it's belong to the CDIR (Classless Inter-Domain Routing) 22.30.204.0/23 (range 22.30.204.0 to 22.30.205.255). The autonomous system number (ASN) is 4538.
| ASN | 4538 |
| IP starting by | 22.30.204.0 |
| IP ending by | 22.30.205.255 |
| ASN Name | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| Numerical IP | |
| Registry | |
| Last update | 02/10/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-10-02 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-10-02 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.76.66.0 | 357319168 | 0 |
| 21.76.66.1 | 357319169 | 0 |
| 21.76.66.2 | 357319170 | 0 |
| 21.76.66.3 | 357319171 | 0 |
| 21.76.66.4 | 357319172 | 0 |
| 21.76.66.5 | 357319173 | 0 |
| 21.76.66.6 | 357319174 | 0 |
| 21.76.66.7 | 357319175 | 0 |
| 21.76.66.8 | 357319176 | 0 |
| 21.76.66.9 | 357319177 | 0 |
| 21.76.66.10 | 357319178 | 0 |
| 21.76.66.11 | 357319179 | 0 |
| 21.76.66.12 | 357319180 | 0 |
| 21.76.66.13 | 357319181 | 0 |
| 21.76.66.14 | 357319182 | 0 |
| 21.76.66.15 | 357319183 | 0 |
| 21.76.66.16 | 357319184 | 0 |
| 21.76.66.17 | 357319185 | 0 |
| 21.76.66.18 | 357319186 | 0 |
| 21.76.66.19 | 357319187 | 0 |
| 21.76.66.20 | 357319188 | 0 |
| 21.76.66.21 | 357319189 | 0 |
| 21.76.66.22 | 357319190 | 0 |
| 21.76.66.23 | 357319191 | 0 |
| 21.76.66.24 | 357319192 | 0 |
| 21.76.66.25 | 357319193 | 0 |
| 21.76.66.26 | 357319194 | 0 |
| 21.76.66.27 | 357319195 | 0 |
| 21.76.66.28 | 357319196 | 0 |
| 21.76.66.29 | 357319197 | 0 |
| 21.76.66.30 | 357319198 | 0 |
| 21.76.66.31 | 357319199 | 0 |
| 21.76.66.32 | 357319200 | 0 |
| 21.76.66.33 | 357319201 | 0 |
| 21.76.66.34 | 357319202 | 0 |
| 21.76.66.35 | 357319203 | 0 |
| 21.76.66.36 | 357319204 | 0 |
| 21.76.66.37 | 357319205 | 0 |
| 21.76.66.38 | 357319206 | 0 |
| 21.76.66.39 | 357319207 | 0 |
| 21.76.66.40 | 357319208 | 0 |
| 21.76.66.41 | 357319209 | 0 |
| 21.76.66.42 | 357319210 | 0 |
| 21.76.66.43 | 357319211 | 0 |
| 21.76.66.44 | 357319212 | 0 |
| 21.76.66.45 | 357319213 | 0 |
| 21.76.66.46 | 357319214 | 0 |
| 21.76.66.47 | 357319215 | 0 |
| 21.76.66.48 | 357319216 | 0 |
| 21.76.66.49 | 357319217 | 0 |
| 21.76.66.50 | 357319218 | 0 |
| 21.76.66.51 | 357319219 | 0 |
| 21.76.66.52 | 357319220 | 0 |
| 21.76.66.53 | 357319221 | 0 |
| 21.76.66.54 | 357319222 | 0 |
| 21.76.66.55 | 357319223 | 0 |
| 21.76.66.56 | 357319224 | 0 |
| 21.76.66.57 | 357319225 | 0 |
| 21.76.66.58 | 357319226 | 0 |
| 21.76.66.59 | 357319227 | 0 |
| 21.76.66.60 | 357319228 | 0 |
| 21.76.66.61 | 357319229 | 0 |
| 21.76.66.62 | 357319230 | 0 |
| 21.76.66.63 | 357319231 | 0 |
| 21.76.66.64 | 357319232 | 0 |
| 21.76.66.65 | 357319233 | 0 |
| 21.76.66.66 | 357319234 | 0 |
| 21.76.66.67 | 357319235 | 0 |
| 21.76.66.68 | 357319236 | 0 |
| 21.76.66.69 | 357319237 | 0 |
| 21.76.66.70 | 357319238 | 0 |
| 21.76.66.71 | 357319239 | 0 |
| 21.76.66.72 | 357319240 | 0 |
| 21.76.66.73 | 357319241 | 0 |
| 21.76.66.74 | 357319242 | 0 |
| 21.76.66.75 | 357319243 | 0 |
| 21.76.66.76 | 357319244 | 0 |
| 21.76.66.77 | 357319245 | 0 |
| 21.76.66.78 | 357319246 | 0 |
| 21.76.66.79 | 357319247 | 0 |
| 21.76.66.80 | 357319248 | 0 |
| 21.76.66.81 | 357319249 | 0 |
| 21.76.66.82 | 357319250 | 0 |
| 21.76.66.83 | 357319251 | 0 |
| 21.76.66.84 | 357319252 | 0 |
| 21.76.66.85 | 357319253 | 0 |