Les adresses IP débutant par 21.209.7 sont fournies par China Education and Research Network Center, elles appartiennent au CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, le bloc IP comprant les adresses de 22.30.204.0 à 22.30.205.255). Le numéro de système autonome (ASN) est 4538.
| ASN | 4538 |
| IP commençant par | 22.30.204.0 |
| IP se terminant par | 22.30.205.255 |
| Nom ASN | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérique | |
| Registe | |
| Dernière mise à jour | 17/09/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | ES | Espagne | - | Madrid | 40,4165 | -3,7026 | 2018-09-17 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2018-09-17 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.209.7.0 | 366020352 | 0 |
| 21.209.7.1 | 366020353 | 0 |
| 21.209.7.2 | 366020354 | 0 |
| 21.209.7.3 | 366020355 | 0 |
| 21.209.7.4 | 366020356 | 0 |
| 21.209.7.5 | 366020357 | 0 |
| 21.209.7.6 | 366020358 | 0 |
| 21.209.7.7 | 366020359 | 0 |
| 21.209.7.8 | 366020360 | 0 |
| 21.209.7.9 | 366020361 | 0 |
| 21.209.7.10 | 366020362 | 0 |
| 21.209.7.11 | 366020363 | 0 |
| 21.209.7.12 | 366020364 | 0 |
| 21.209.7.13 | 366020365 | 0 |
| 21.209.7.14 | 366020366 | 0 |
| 21.209.7.15 | 366020367 | 0 |
| 21.209.7.16 | 366020368 | 0 |
| 21.209.7.17 | 366020369 | 0 |
| 21.209.7.18 | 366020370 | 0 |
| 21.209.7.19 | 366020371 | 0 |
| 21.209.7.20 | 366020372 | 0 |
| 21.209.7.21 | 366020373 | 0 |
| 21.209.7.22 | 366020374 | 0 |
| 21.209.7.23 | 366020375 | 0 |
| 21.209.7.24 | 366020376 | 0 |
| 21.209.7.25 | 366020377 | 0 |
| 21.209.7.26 | 366020378 | 0 |
| 21.209.7.27 | 366020379 | 0 |
| 21.209.7.28 | 366020380 | 0 |
| 21.209.7.29 | 366020381 | 0 |
| 21.209.7.30 | 366020382 | 0 |
| 21.209.7.31 | 366020383 | 0 |
| 21.209.7.32 | 366020384 | 0 |
| 21.209.7.33 | 366020385 | 0 |
| 21.209.7.34 | 366020386 | 0 |
| 21.209.7.35 | 366020387 | 0 |
| 21.209.7.36 | 366020388 | 0 |
| 21.209.7.37 | 366020389 | 0 |
| 21.209.7.38 | 366020390 | 0 |
| 21.209.7.39 | 366020391 | 0 |
| 21.209.7.40 | 366020392 | 0 |
| 21.209.7.41 | 366020393 | 0 |
| 21.209.7.42 | 366020394 | 0 |
| 21.209.7.43 | 366020395 | 0 |
| 21.209.7.44 | 366020396 | 0 |
| 21.209.7.45 | 366020397 | 0 |
| 21.209.7.46 | 366020398 | 0 |
| 21.209.7.47 | 366020399 | 0 |
| 21.209.7.48 | 366020400 | 0 |
| 21.209.7.49 | 366020401 | 0 |
| 21.209.7.50 | 366020402 | 0 |
| 21.209.7.51 | 366020403 | 0 |
| 21.209.7.52 | 366020404 | 0 |
| 21.209.7.53 | 366020405 | 0 |
| 21.209.7.54 | 366020406 | 0 |
| 21.209.7.55 | 366020407 | 0 |
| 21.209.7.56 | 366020408 | 0 |
| 21.209.7.57 | 366020409 | 0 |
| 21.209.7.58 | 366020410 | 0 |
| 21.209.7.59 | 366020411 | 0 |
| 21.209.7.60 | 366020412 | 0 |
| 21.209.7.61 | 366020413 | 0 |
| 21.209.7.62 | 366020414 | 0 |
| 21.209.7.63 | 366020415 | 0 |
| 21.209.7.64 | 366020416 | 0 |
| 21.209.7.65 | 366020417 | 0 |
| 21.209.7.66 | 366020418 | 0 |
| 21.209.7.67 | 366020419 | 0 |
| 21.209.7.68 | 366020420 | 0 |
| 21.209.7.69 | 366020421 | 0 |
| 21.209.7.70 | 366020422 | 0 |
| 21.209.7.71 | 366020423 | 0 |
| 21.209.7.72 | 366020424 | 0 |
| 21.209.7.73 | 366020425 | 0 |
| 21.209.7.74 | 366020426 | 0 |
| 21.209.7.75 | 366020427 | 0 |
| 21.209.7.76 | 366020428 | 0 |
| 21.209.7.77 | 366020429 | 0 |
| 21.209.7.78 | 366020430 | 0 |
| 21.209.7.79 | 366020431 | 0 |
| 21.209.7.80 | 366020432 | 0 |
| 21.209.7.81 | 366020433 | 0 |
| 21.209.7.82 | 366020434 | 0 |
| 21.209.7.83 | 366020435 | 0 |
| 21.209.7.84 | 366020436 | 0 |
| 21.209.7.85 | 366020437 | 0 |