The IP address 21.78.28 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 | 20/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-08-19 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-08-19 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.78.28.0 | 357440512 | 0 |
| 21.78.28.1 | 357440513 | 0 |
| 21.78.28.2 | 357440514 | 0 |
| 21.78.28.3 | 357440515 | 0 |
| 21.78.28.4 | 357440516 | 0 |
| 21.78.28.5 | 357440517 | 0 |
| 21.78.28.6 | 357440518 | 0 |
| 21.78.28.7 | 357440519 | 0 |
| 21.78.28.8 | 357440520 | 0 |
| 21.78.28.9 | 357440521 | 0 |
| 21.78.28.10 | 357440522 | 0 |
| 21.78.28.11 | 357440523 | 0 |
| 21.78.28.12 | 357440524 | 0 |
| 21.78.28.13 | 357440525 | 0 |
| 21.78.28.14 | 357440526 | 0 |
| 21.78.28.15 | 357440527 | 0 |
| 21.78.28.16 | 357440528 | 0 |
| 21.78.28.17 | 357440529 | 0 |
| 21.78.28.18 | 357440530 | 0 |
| 21.78.28.19 | 357440531 | 0 |
| 21.78.28.20 | 357440532 | 0 |
| 21.78.28.21 | 357440533 | 0 |
| 21.78.28.22 | 357440534 | 0 |
| 21.78.28.23 | 357440535 | 0 |
| 21.78.28.24 | 357440536 | 0 |
| 21.78.28.25 | 357440537 | 0 |
| 21.78.28.26 | 357440538 | 0 |
| 21.78.28.27 | 357440539 | 0 |
| 21.78.28.28 | 357440540 | 0 |
| 21.78.28.29 | 357440541 | 0 |
| 21.78.28.30 | 357440542 | 0 |
| 21.78.28.31 | 357440543 | 0 |
| 21.78.28.32 | 357440544 | 0 |
| 21.78.28.33 | 357440545 | 0 |
| 21.78.28.34 | 357440546 | 0 |
| 21.78.28.35 | 357440547 | 0 |
| 21.78.28.36 | 357440548 | 0 |
| 21.78.28.37 | 357440549 | 0 |
| 21.78.28.38 | 357440550 | 0 |
| 21.78.28.39 | 357440551 | 0 |
| 21.78.28.40 | 357440552 | 0 |
| 21.78.28.41 | 357440553 | 0 |
| 21.78.28.42 | 357440554 | 0 |
| 21.78.28.43 | 357440555 | 0 |
| 21.78.28.44 | 357440556 | 0 |
| 21.78.28.45 | 357440557 | 0 |
| 21.78.28.46 | 357440558 | 0 |
| 21.78.28.47 | 357440559 | 0 |
| 21.78.28.48 | 357440560 | 0 |
| 21.78.28.49 | 357440561 | 0 |
| 21.78.28.50 | 357440562 | 0 |
| 21.78.28.51 | 357440563 | 0 |
| 21.78.28.52 | 357440564 | 0 |
| 21.78.28.53 | 357440565 | 0 |
| 21.78.28.54 | 357440566 | 0 |
| 21.78.28.55 | 357440567 | 0 |
| 21.78.28.56 | 357440568 | 0 |
| 21.78.28.57 | 357440569 | 0 |
| 21.78.28.58 | 357440570 | 0 |
| 21.78.28.59 | 357440571 | 0 |
| 21.78.28.60 | 357440572 | 0 |
| 21.78.28.61 | 357440573 | 0 |
| 21.78.28.62 | 357440574 | 0 |
| 21.78.28.63 | 357440575 | 0 |
| 21.78.28.64 | 357440576 | 0 |
| 21.78.28.65 | 357440577 | 0 |
| 21.78.28.66 | 357440578 | 0 |
| 21.78.28.67 | 357440579 | 0 |
| 21.78.28.68 | 357440580 | 0 |
| 21.78.28.69 | 357440581 | 0 |
| 21.78.28.70 | 357440582 | 0 |
| 21.78.28.71 | 357440583 | 0 |
| 21.78.28.72 | 357440584 | 0 |
| 21.78.28.73 | 357440585 | 0 |
| 21.78.28.74 | 357440586 | 0 |
| 21.78.28.75 | 357440587 | 0 |
| 21.78.28.76 | 357440588 | 0 |
| 21.78.28.77 | 357440589 | 0 |
| 21.78.28.78 | 357440590 | 0 |
| 21.78.28.79 | 357440591 | 0 |
| 21.78.28.80 | 357440592 | 0 |
| 21.78.28.81 | 357440593 | 0 |
| 21.78.28.82 | 357440594 | 0 |
| 21.78.28.83 | 357440595 | 0 |
| 21.78.28.84 | 357440596 | 0 |
| 21.78.28.85 | 357440597 | 0 |