The IP address 21.78.16 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 | 11/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-08-11 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-08-11 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.78.16.0 | 357437440 | 0 |
| 21.78.16.1 | 357437441 | 0 |
| 21.78.16.2 | 357437442 | 0 |
| 21.78.16.3 | 357437443 | 0 |
| 21.78.16.4 | 357437444 | 0 |
| 21.78.16.5 | 357437445 | 0 |
| 21.78.16.6 | 357437446 | 0 |
| 21.78.16.7 | 357437447 | 0 |
| 21.78.16.8 | 357437448 | 0 |
| 21.78.16.9 | 357437449 | 0 |
| 21.78.16.10 | 357437450 | 0 |
| 21.78.16.11 | 357437451 | 0 |
| 21.78.16.12 | 357437452 | 0 |
| 21.78.16.13 | 357437453 | 0 |
| 21.78.16.14 | 357437454 | 0 |
| 21.78.16.15 | 357437455 | 0 |
| 21.78.16.16 | 357437456 | 0 |
| 21.78.16.17 | 357437457 | 0 |
| 21.78.16.18 | 357437458 | 0 |
| 21.78.16.19 | 357437459 | 0 |
| 21.78.16.20 | 357437460 | 0 |
| 21.78.16.21 | 357437461 | 0 |
| 21.78.16.22 | 357437462 | 0 |
| 21.78.16.23 | 357437463 | 0 |
| 21.78.16.24 | 357437464 | 0 |
| 21.78.16.25 | 357437465 | 0 |
| 21.78.16.26 | 357437466 | 0 |
| 21.78.16.27 | 357437467 | 0 |
| 21.78.16.28 | 357437468 | 0 |
| 21.78.16.29 | 357437469 | 0 |
| 21.78.16.30 | 357437470 | 0 |
| 21.78.16.31 | 357437471 | 0 |
| 21.78.16.32 | 357437472 | 0 |
| 21.78.16.33 | 357437473 | 0 |
| 21.78.16.34 | 357437474 | 0 |
| 21.78.16.35 | 357437475 | 0 |
| 21.78.16.36 | 357437476 | 0 |
| 21.78.16.37 | 357437477 | 0 |
| 21.78.16.38 | 357437478 | 0 |
| 21.78.16.39 | 357437479 | 0 |
| 21.78.16.40 | 357437480 | 0 |
| 21.78.16.41 | 357437481 | 0 |
| 21.78.16.42 | 357437482 | 0 |
| 21.78.16.43 | 357437483 | 0 |
| 21.78.16.44 | 357437484 | 0 |
| 21.78.16.45 | 357437485 | 0 |
| 21.78.16.46 | 357437486 | 0 |
| 21.78.16.47 | 357437487 | 0 |
| 21.78.16.48 | 357437488 | 0 |
| 21.78.16.49 | 357437489 | 0 |
| 21.78.16.50 | 357437490 | 0 |
| 21.78.16.51 | 357437491 | 0 |
| 21.78.16.52 | 357437492 | 0 |
| 21.78.16.53 | 357437493 | 0 |
| 21.78.16.54 | 357437494 | 0 |
| 21.78.16.55 | 357437495 | 0 |
| 21.78.16.56 | 357437496 | 0 |
| 21.78.16.57 | 357437497 | 0 |
| 21.78.16.58 | 357437498 | 0 |
| 21.78.16.59 | 357437499 | 0 |
| 21.78.16.60 | 357437500 | 0 |
| 21.78.16.61 | 357437501 | 0 |
| 21.78.16.62 | 357437502 | 0 |
| 21.78.16.63 | 357437503 | 0 |
| 21.78.16.64 | 357437504 | 0 |
| 21.78.16.65 | 357437505 | 0 |
| 21.78.16.66 | 357437506 | 0 |
| 21.78.16.67 | 357437507 | 0 |
| 21.78.16.68 | 357437508 | 0 |
| 21.78.16.69 | 357437509 | 0 |
| 21.78.16.70 | 357437510 | 0 |
| 21.78.16.71 | 357437511 | 0 |
| 21.78.16.72 | 357437512 | 0 |
| 21.78.16.73 | 357437513 | 0 |
| 21.78.16.74 | 357437514 | 0 |
| 21.78.16.75 | 357437515 | 0 |
| 21.78.16.76 | 357437516 | 0 |
| 21.78.16.77 | 357437517 | 0 |
| 21.78.16.78 | 357437518 | 0 |
| 21.78.16.79 | 357437519 | 0 |
| 21.78.16.80 | 357437520 | 0 |
| 21.78.16.81 | 357437521 | 0 |
| 21.78.16.82 | 357437522 | 0 |
| 21.78.16.83 | 357437523 | 0 |
| 21.78.16.84 | 357437524 | 0 |
| 21.78.16.85 | 357437525 | 0 |