L'indirizzo IP 21.98.91 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 | 27/09/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Columbus | 39,9664 | -83,0128 | 2017-09-26 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2017-09-26 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.98.91.0 | 358767360 | 0 |
| 21.98.91.1 | 358767361 | 0 |
| 21.98.91.2 | 358767362 | 0 |
| 21.98.91.3 | 358767363 | 0 |
| 21.98.91.4 | 358767364 | 0 |
| 21.98.91.5 | 358767365 | 0 |
| 21.98.91.6 | 358767366 | 0 |
| 21.98.91.7 | 358767367 | 0 |
| 21.98.91.8 | 358767368 | 0 |
| 21.98.91.9 | 358767369 | 0 |
| 21.98.91.10 | 358767370 | 0 |
| 21.98.91.11 | 358767371 | 0 |
| 21.98.91.12 | 358767372 | 0 |
| 21.98.91.13 | 358767373 | 0 |
| 21.98.91.14 | 358767374 | 0 |
| 21.98.91.15 | 358767375 | 0 |
| 21.98.91.16 | 358767376 | 0 |
| 21.98.91.17 | 358767377 | 0 |
| 21.98.91.18 | 358767378 | 0 |
| 21.98.91.19 | 358767379 | 0 |
| 21.98.91.20 | 358767380 | 0 |
| 21.98.91.21 | 358767381 | 0 |
| 21.98.91.22 | 358767382 | 0 |
| 21.98.91.23 | 358767383 | 0 |
| 21.98.91.24 | 358767384 | 0 |
| 21.98.91.25 | 358767385 | 0 |
| 21.98.91.26 | 358767386 | 0 |
| 21.98.91.27 | 358767387 | 0 |
| 21.98.91.28 | 358767388 | 0 |
| 21.98.91.29 | 358767389 | 0 |
| 21.98.91.30 | 358767390 | 0 |
| 21.98.91.31 | 358767391 | 0 |
| 21.98.91.32 | 358767392 | 0 |
| 21.98.91.33 | 358767393 | 0 |
| 21.98.91.34 | 358767394 | 0 |
| 21.98.91.35 | 358767395 | 0 |
| 21.98.91.36 | 358767396 | 0 |
| 21.98.91.37 | 358767397 | 0 |
| 21.98.91.38 | 358767398 | 0 |
| 21.98.91.39 | 358767399 | 0 |
| 21.98.91.40 | 358767400 | 0 |
| 21.98.91.41 | 358767401 | 0 |
| 21.98.91.42 | 358767402 | 0 |
| 21.98.91.43 | 358767403 | 0 |
| 21.98.91.44 | 358767404 | 0 |
| 21.98.91.45 | 358767405 | 0 |
| 21.98.91.46 | 358767406 | 0 |
| 21.98.91.47 | 358767407 | 0 |
| 21.98.91.48 | 358767408 | 0 |
| 21.98.91.49 | 358767409 | 0 |
| 21.98.91.50 | 358767410 | 0 |
| 21.98.91.51 | 358767411 | 0 |
| 21.98.91.52 | 358767412 | 0 |
| 21.98.91.53 | 358767413 | 0 |
| 21.98.91.54 | 358767414 | 0 |
| 21.98.91.55 | 358767415 | 0 |
| 21.98.91.56 | 358767416 | 0 |
| 21.98.91.57 | 358767417 | 0 |
| 21.98.91.58 | 358767418 | 0 |
| 21.98.91.59 | 358767419 | 0 |
| 21.98.91.60 | 358767420 | 0 |
| 21.98.91.61 | 358767421 | 0 |
| 21.98.91.62 | 358767422 | 0 |
| 21.98.91.63 | 358767423 | 0 |
| 21.98.91.64 | 358767424 | 0 |
| 21.98.91.65 | 358767425 | 0 |
| 21.98.91.66 | 358767426 | 0 |
| 21.98.91.67 | 358767427 | 0 |
| 21.98.91.68 | 358767428 | 0 |
| 21.98.91.69 | 358767429 | 0 |
| 21.98.91.70 | 358767430 | 0 |
| 21.98.91.71 | 358767431 | 0 |
| 21.98.91.72 | 358767432 | 0 |
| 21.98.91.73 | 358767433 | 0 |
| 21.98.91.74 | 358767434 | 0 |
| 21.98.91.75 | 358767435 | 0 |
| 21.98.91.76 | 358767436 | 0 |
| 21.98.91.77 | 358767437 | 0 |
| 21.98.91.78 | 358767438 | 0 |
| 21.98.91.79 | 358767439 | 0 |
| 21.98.91.80 | 358767440 | 0 |
| 21.98.91.81 | 358767441 | 0 |
| 21.98.91.82 | 358767442 | 0 |
| 21.98.91.83 | 358767443 | 0 |
| 21.98.91.84 | 358767444 | 0 |
| 21.98.91.85 | 358767445 | 0 |