The IP address 21.99.18 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 | 28/09/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-09-28 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-09-28 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.99.18.0 | 358814208 | 0 |
| 21.99.18.1 | 358814209 | 0 |
| 21.99.18.2 | 358814210 | 0 |
| 21.99.18.3 | 358814211 | 0 |
| 21.99.18.4 | 358814212 | 0 |
| 21.99.18.5 | 358814213 | 0 |
| 21.99.18.6 | 358814214 | 0 |
| 21.99.18.7 | 358814215 | 0 |
| 21.99.18.8 | 358814216 | 0 |
| 21.99.18.9 | 358814217 | 0 |
| 21.99.18.10 | 358814218 | 0 |
| 21.99.18.11 | 358814219 | 0 |
| 21.99.18.12 | 358814220 | 0 |
| 21.99.18.13 | 358814221 | 0 |
| 21.99.18.14 | 358814222 | 0 |
| 21.99.18.15 | 358814223 | 0 |
| 21.99.18.16 | 358814224 | 0 |
| 21.99.18.17 | 358814225 | 0 |
| 21.99.18.18 | 358814226 | 0 |
| 21.99.18.19 | 358814227 | 0 |
| 21.99.18.20 | 358814228 | 0 |
| 21.99.18.21 | 358814229 | 0 |
| 21.99.18.22 | 358814230 | 0 |
| 21.99.18.23 | 358814231 | 0 |
| 21.99.18.24 | 358814232 | 0 |
| 21.99.18.25 | 358814233 | 0 |
| 21.99.18.26 | 358814234 | 0 |
| 21.99.18.27 | 358814235 | 0 |
| 21.99.18.28 | 358814236 | 0 |
| 21.99.18.29 | 358814237 | 0 |
| 21.99.18.30 | 358814238 | 0 |
| 21.99.18.31 | 358814239 | 0 |
| 21.99.18.32 | 358814240 | 0 |
| 21.99.18.33 | 358814241 | 0 |
| 21.99.18.34 | 358814242 | 0 |
| 21.99.18.35 | 358814243 | 0 |
| 21.99.18.36 | 358814244 | 0 |
| 21.99.18.37 | 358814245 | 0 |
| 21.99.18.38 | 358814246 | 0 |
| 21.99.18.39 | 358814247 | 0 |
| 21.99.18.40 | 358814248 | 0 |
| 21.99.18.41 | 358814249 | 0 |
| 21.99.18.42 | 358814250 | 0 |
| 21.99.18.43 | 358814251 | 0 |
| 21.99.18.44 | 358814252 | 0 |
| 21.99.18.45 | 358814253 | 0 |
| 21.99.18.46 | 358814254 | 0 |
| 21.99.18.47 | 358814255 | 0 |
| 21.99.18.48 | 358814256 | 0 |
| 21.99.18.49 | 358814257 | 0 |
| 21.99.18.50 | 358814258 | 0 |
| 21.99.18.51 | 358814259 | 0 |
| 21.99.18.52 | 358814260 | 0 |
| 21.99.18.53 | 358814261 | 0 |
| 21.99.18.54 | 358814262 | 0 |
| 21.99.18.55 | 358814263 | 0 |
| 21.99.18.56 | 358814264 | 0 |
| 21.99.18.57 | 358814265 | 0 |
| 21.99.18.58 | 358814266 | 0 |
| 21.99.18.59 | 358814267 | 0 |
| 21.99.18.60 | 358814268 | 0 |
| 21.99.18.61 | 358814269 | 0 |
| 21.99.18.62 | 358814270 | 0 |
| 21.99.18.63 | 358814271 | 0 |
| 21.99.18.64 | 358814272 | 0 |
| 21.99.18.65 | 358814273 | 0 |
| 21.99.18.66 | 358814274 | 0 |
| 21.99.18.67 | 358814275 | 0 |
| 21.99.18.68 | 358814276 | 0 |
| 21.99.18.69 | 358814277 | 0 |
| 21.99.18.70 | 358814278 | 0 |
| 21.99.18.71 | 358814279 | 0 |
| 21.99.18.72 | 358814280 | 0 |
| 21.99.18.73 | 358814281 | 0 |
| 21.99.18.74 | 358814282 | 0 |
| 21.99.18.75 | 358814283 | 0 |
| 21.99.18.76 | 358814284 | 0 |
| 21.99.18.77 | 358814285 | 0 |
| 21.99.18.78 | 358814286 | 0 |
| 21.99.18.79 | 358814287 | 0 |
| 21.99.18.80 | 358814288 | 0 |
| 21.99.18.81 | 358814289 | 0 |
| 21.99.18.82 | 358814290 | 0 |
| 21.99.18.83 | 358814291 | 0 |
| 21.99.18.84 | 358814292 | 0 |
| 21.99.18.85 | 358814293 | 0 |