The IP address 21.231.0 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 | 10/08/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | ES | Spain | - | Madrid | 40.4165 | -3.7026 | 2018-08-09 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-08-09 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.231.0.0 | 367460352 | 0 |
| 21.231.0.1 | 367460353 | 0 |
| 21.231.0.2 | 367460354 | 0 |
| 21.231.0.3 | 367460355 | 0 |
| 21.231.0.4 | 367460356 | 0 |
| 21.231.0.5 | 367460357 | 0 |
| 21.231.0.6 | 367460358 | 0 |
| 21.231.0.7 | 367460359 | 0 |
| 21.231.0.8 | 367460360 | 0 |
| 21.231.0.9 | 367460361 | 0 |
| 21.231.0.10 | 367460362 | 0 |
| 21.231.0.11 | 367460363 | 0 |
| 21.231.0.12 | 367460364 | 0 |
| 21.231.0.13 | 367460365 | 0 |
| 21.231.0.14 | 367460366 | 0 |
| 21.231.0.15 | 367460367 | 0 |
| 21.231.0.16 | 367460368 | 0 |
| 21.231.0.17 | 367460369 | 0 |
| 21.231.0.18 | 367460370 | 0 |
| 21.231.0.19 | 367460371 | 0 |
| 21.231.0.20 | 367460372 | 0 |
| 21.231.0.21 | 367460373 | 0 |
| 21.231.0.22 | 367460374 | 0 |
| 21.231.0.23 | 367460375 | 0 |
| 21.231.0.24 | 367460376 | 0 |
| 21.231.0.25 | 367460377 | 0 |
| 21.231.0.26 | 367460378 | 0 |
| 21.231.0.27 | 367460379 | 0 |
| 21.231.0.28 | 367460380 | 0 |
| 21.231.0.29 | 367460381 | 0 |
| 21.231.0.30 | 367460382 | 0 |
| 21.231.0.31 | 367460383 | 0 |
| 21.231.0.32 | 367460384 | 0 |
| 21.231.0.33 | 367460385 | 0 |
| 21.231.0.34 | 367460386 | 0 |
| 21.231.0.35 | 367460387 | 0 |
| 21.231.0.36 | 367460388 | 0 |
| 21.231.0.37 | 367460389 | 0 |
| 21.231.0.38 | 367460390 | 0 |
| 21.231.0.39 | 367460391 | 0 |
| 21.231.0.40 | 367460392 | 0 |
| 21.231.0.41 | 367460393 | 0 |
| 21.231.0.42 | 367460394 | 0 |
| 21.231.0.43 | 367460395 | 0 |
| 21.231.0.44 | 367460396 | 0 |
| 21.231.0.45 | 367460397 | 0 |
| 21.231.0.46 | 367460398 | 0 |
| 21.231.0.47 | 367460399 | 0 |
| 21.231.0.48 | 367460400 | 0 |
| 21.231.0.49 | 367460401 | 0 |
| 21.231.0.50 | 367460402 | 0 |
| 21.231.0.51 | 367460403 | 0 |
| 21.231.0.52 | 367460404 | 0 |
| 21.231.0.53 | 367460405 | 0 |
| 21.231.0.54 | 367460406 | 0 |
| 21.231.0.55 | 367460407 | 0 |
| 21.231.0.56 | 367460408 | 0 |
| 21.231.0.57 | 367460409 | 0 |
| 21.231.0.58 | 367460410 | 0 |
| 21.231.0.59 | 367460411 | 0 |
| 21.231.0.60 | 367460412 | 0 |
| 21.231.0.61 | 367460413 | 0 |
| 21.231.0.62 | 367460414 | 0 |
| 21.231.0.63 | 367460415 | 0 |
| 21.231.0.64 | 367460416 | 0 |
| 21.231.0.65 | 367460417 | 0 |
| 21.231.0.66 | 367460418 | 0 |
| 21.231.0.67 | 367460419 | 0 |
| 21.231.0.68 | 367460420 | 0 |
| 21.231.0.69 | 367460421 | 0 |
| 21.231.0.70 | 367460422 | 0 |
| 21.231.0.71 | 367460423 | 0 |
| 21.231.0.72 | 367460424 | 0 |
| 21.231.0.73 | 367460425 | 0 |
| 21.231.0.74 | 367460426 | 0 |
| 21.231.0.75 | 367460427 | 0 |
| 21.231.0.76 | 367460428 | 0 |
| 21.231.0.77 | 367460429 | 0 |
| 21.231.0.78 | 367460430 | 0 |
| 21.231.0.79 | 367460431 | 0 |
| 21.231.0.80 | 367460432 | 0 |
| 21.231.0.81 | 367460433 | 0 |
| 21.231.0.82 | 367460434 | 0 |
| 21.231.0.83 | 367460435 | 0 |
| 21.231.0.84 | 367460436 | 0 |
| 21.231.0.85 | 367460437 | 0 |