The IP address 21.78.15 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 | 10/01/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2018-01-10 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-01-10 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.78.15.0 | 357437184 | 0 |
| 21.78.15.1 | 357437185 | 0 |
| 21.78.15.2 | 357437186 | 0 |
| 21.78.15.3 | 357437187 | 0 |
| 21.78.15.4 | 357437188 | 0 |
| 21.78.15.5 | 357437189 | 0 |
| 21.78.15.6 | 357437190 | 0 |
| 21.78.15.7 | 357437191 | 0 |
| 21.78.15.8 | 357437192 | 0 |
| 21.78.15.9 | 357437193 | 0 |
| 21.78.15.10 | 357437194 | 0 |
| 21.78.15.11 | 357437195 | 0 |
| 21.78.15.12 | 357437196 | 0 |
| 21.78.15.13 | 357437197 | 0 |
| 21.78.15.14 | 357437198 | 0 |
| 21.78.15.15 | 357437199 | 0 |
| 21.78.15.16 | 357437200 | 0 |
| 21.78.15.17 | 357437201 | 0 |
| 21.78.15.18 | 357437202 | 0 |
| 21.78.15.19 | 357437203 | 0 |
| 21.78.15.20 | 357437204 | 0 |
| 21.78.15.21 | 357437205 | 0 |
| 21.78.15.22 | 357437206 | 0 |
| 21.78.15.23 | 357437207 | 0 |
| 21.78.15.24 | 357437208 | 0 |
| 21.78.15.25 | 357437209 | 0 |
| 21.78.15.26 | 357437210 | 0 |
| 21.78.15.27 | 357437211 | 0 |
| 21.78.15.28 | 357437212 | 0 |
| 21.78.15.29 | 357437213 | 0 |
| 21.78.15.30 | 357437214 | 0 |
| 21.78.15.31 | 357437215 | 0 |
| 21.78.15.32 | 357437216 | 0 |
| 21.78.15.33 | 357437217 | 0 |
| 21.78.15.34 | 357437218 | 0 |
| 21.78.15.35 | 357437219 | 0 |
| 21.78.15.36 | 357437220 | 0 |
| 21.78.15.37 | 357437221 | 0 |
| 21.78.15.38 | 357437222 | 0 |
| 21.78.15.39 | 357437223 | 0 |
| 21.78.15.40 | 357437224 | 0 |
| 21.78.15.41 | 357437225 | 0 |
| 21.78.15.42 | 357437226 | 0 |
| 21.78.15.43 | 357437227 | 0 |
| 21.78.15.44 | 357437228 | 0 |
| 21.78.15.45 | 357437229 | 0 |
| 21.78.15.46 | 357437230 | 0 |
| 21.78.15.47 | 357437231 | 0 |
| 21.78.15.48 | 357437232 | 0 |
| 21.78.15.49 | 357437233 | 0 |
| 21.78.15.50 | 357437234 | 0 |
| 21.78.15.51 | 357437235 | 0 |
| 21.78.15.52 | 357437236 | 0 |
| 21.78.15.53 | 357437237 | 0 |
| 21.78.15.54 | 357437238 | 0 |
| 21.78.15.55 | 357437239 | 0 |
| 21.78.15.56 | 357437240 | 0 |
| 21.78.15.57 | 357437241 | 0 |
| 21.78.15.58 | 357437242 | 0 |
| 21.78.15.59 | 357437243 | 0 |
| 21.78.15.60 | 357437244 | 0 |
| 21.78.15.61 | 357437245 | 0 |
| 21.78.15.62 | 357437246 | 0 |
| 21.78.15.63 | 357437247 | 0 |
| 21.78.15.64 | 357437248 | 0 |
| 21.78.15.65 | 357437249 | 0 |
| 21.78.15.66 | 357437250 | 0 |
| 21.78.15.67 | 357437251 | 0 |
| 21.78.15.68 | 357437252 | 0 |
| 21.78.15.69 | 357437253 | 0 |
| 21.78.15.70 | 357437254 | 0 |
| 21.78.15.71 | 357437255 | 0 |
| 21.78.15.72 | 357437256 | 0 |
| 21.78.15.73 | 357437257 | 0 |
| 21.78.15.74 | 357437258 | 0 |
| 21.78.15.75 | 357437259 | 0 |
| 21.78.15.76 | 357437260 | 0 |
| 21.78.15.77 | 357437261 | 0 |
| 21.78.15.78 | 357437262 | 0 |
| 21.78.15.79 | 357437263 | 0 |
| 21.78.15.80 | 357437264 | 0 |
| 21.78.15.81 | 357437265 | 0 |
| 21.78.15.82 | 357437266 | 0 |
| 21.78.15.83 | 357437267 | 0 |
| 21.78.15.84 | 357437268 | 0 |
| 21.78.15.85 | 357437269 | 0 |