L'indirizzo IP 21.99.73 è fornito da China Education and Research Network Center, che è di proprietà del CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP tra 22.30.204.0 a 22.30.205.255 ). Il numero di sistema autonomo (ASN) è 4538.
| ASN | 4538 |
| IP inizia con | 22.30.204.0 |
| IP finale con | 22.30.205.255 |
| ASN Nome | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numerico | |
| Registe | |
| Ultimo aggiornamento | 18/02/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Columbus | 39,9664 | -83,0128 | 2018-02-18 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2018-02-18 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.99.73.0 | 358828288 | 0 |
| 21.99.73.1 | 358828289 | 0 |
| 21.99.73.2 | 358828290 | 0 |
| 21.99.73.3 | 358828291 | 0 |
| 21.99.73.4 | 358828292 | 0 |
| 21.99.73.5 | 358828293 | 0 |
| 21.99.73.6 | 358828294 | 0 |
| 21.99.73.7 | 358828295 | 0 |
| 21.99.73.8 | 358828296 | 0 |
| 21.99.73.9 | 358828297 | 0 |
| 21.99.73.10 | 358828298 | 0 |
| 21.99.73.11 | 358828299 | 0 |
| 21.99.73.12 | 358828300 | 0 |
| 21.99.73.13 | 358828301 | 0 |
| 21.99.73.14 | 358828302 | 0 |
| 21.99.73.15 | 358828303 | 0 |
| 21.99.73.16 | 358828304 | 0 |
| 21.99.73.17 | 358828305 | 0 |
| 21.99.73.18 | 358828306 | 0 |
| 21.99.73.19 | 358828307 | 0 |
| 21.99.73.20 | 358828308 | 0 |
| 21.99.73.21 | 358828309 | 0 |
| 21.99.73.22 | 358828310 | 0 |
| 21.99.73.23 | 358828311 | 0 |
| 21.99.73.24 | 358828312 | 0 |
| 21.99.73.25 | 358828313 | 0 |
| 21.99.73.26 | 358828314 | 0 |
| 21.99.73.27 | 358828315 | 0 |
| 21.99.73.28 | 358828316 | 0 |
| 21.99.73.29 | 358828317 | 0 |
| 21.99.73.30 | 358828318 | 0 |
| 21.99.73.31 | 358828319 | 0 |
| 21.99.73.32 | 358828320 | 0 |
| 21.99.73.33 | 358828321 | 0 |
| 21.99.73.34 | 358828322 | 0 |
| 21.99.73.35 | 358828323 | 0 |
| 21.99.73.36 | 358828324 | 0 |
| 21.99.73.37 | 358828325 | 0 |
| 21.99.73.38 | 358828326 | 0 |
| 21.99.73.39 | 358828327 | 0 |
| 21.99.73.40 | 358828328 | 0 |
| 21.99.73.41 | 358828329 | 0 |
| 21.99.73.42 | 358828330 | 0 |
| 21.99.73.43 | 358828331 | 0 |
| 21.99.73.44 | 358828332 | 0 |
| 21.99.73.45 | 358828333 | 0 |
| 21.99.73.46 | 358828334 | 0 |
| 21.99.73.47 | 358828335 | 0 |
| 21.99.73.48 | 358828336 | 0 |
| 21.99.73.49 | 358828337 | 0 |
| 21.99.73.50 | 358828338 | 0 |
| 21.99.73.51 | 358828339 | 0 |
| 21.99.73.52 | 358828340 | 0 |
| 21.99.73.53 | 358828341 | 0 |
| 21.99.73.54 | 358828342 | 0 |
| 21.99.73.55 | 358828343 | 0 |
| 21.99.73.56 | 358828344 | 0 |
| 21.99.73.57 | 358828345 | 0 |
| 21.99.73.58 | 358828346 | 0 |
| 21.99.73.59 | 358828347 | 0 |
| 21.99.73.60 | 358828348 | 0 |
| 21.99.73.61 | 358828349 | 0 |
| 21.99.73.62 | 358828350 | 0 |
| 21.99.73.63 | 358828351 | 0 |
| 21.99.73.64 | 358828352 | 0 |
| 21.99.73.65 | 358828353 | 0 |
| 21.99.73.66 | 358828354 | 0 |
| 21.99.73.67 | 358828355 | 0 |
| 21.99.73.68 | 358828356 | 0 |
| 21.99.73.69 | 358828357 | 0 |
| 21.99.73.70 | 358828358 | 0 |
| 21.99.73.71 | 358828359 | 0 |
| 21.99.73.72 | 358828360 | 0 |
| 21.99.73.73 | 358828361 | 0 |
| 21.99.73.74 | 358828362 | 0 |
| 21.99.73.75 | 358828363 | 0 |
| 21.99.73.76 | 358828364 | 0 |
| 21.99.73.77 | 358828365 | 0 |
| 21.99.73.78 | 358828366 | 0 |
| 21.99.73.79 | 358828367 | 0 |
| 21.99.73.80 | 358828368 | 0 |
| 21.99.73.81 | 358828369 | 0 |
| 21.99.73.82 | 358828370 | 0 |
| 21.99.73.83 | 358828371 | 0 |
| 21.99.73.84 | 358828372 | 0 |
| 21.99.73.85 | 358828373 | 0 |