The IP address 21.80.28 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 | 24/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-07-24 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-07-24 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.80.28.0 | 357571584 | 0 |
| 21.80.28.1 | 357571585 | 0 |
| 21.80.28.2 | 357571586 | 0 |
| 21.80.28.3 | 357571587 | 0 |
| 21.80.28.4 | 357571588 | 0 |
| 21.80.28.5 | 357571589 | 0 |
| 21.80.28.6 | 357571590 | 0 |
| 21.80.28.7 | 357571591 | 0 |
| 21.80.28.8 | 357571592 | 0 |
| 21.80.28.9 | 357571593 | 0 |
| 21.80.28.10 | 357571594 | 0 |
| 21.80.28.11 | 357571595 | 0 |
| 21.80.28.12 | 357571596 | 0 |
| 21.80.28.13 | 357571597 | 0 |
| 21.80.28.14 | 357571598 | 0 |
| 21.80.28.15 | 357571599 | 0 |
| 21.80.28.16 | 357571600 | 0 |
| 21.80.28.17 | 357571601 | 0 |
| 21.80.28.18 | 357571602 | 0 |
| 21.80.28.19 | 357571603 | 0 |
| 21.80.28.20 | 357571604 | 0 |
| 21.80.28.21 | 357571605 | 0 |
| 21.80.28.22 | 357571606 | 0 |
| 21.80.28.23 | 357571607 | 0 |
| 21.80.28.24 | 357571608 | 0 |
| 21.80.28.25 | 357571609 | 0 |
| 21.80.28.26 | 357571610 | 0 |
| 21.80.28.27 | 357571611 | 0 |
| 21.80.28.28 | 357571612 | 0 |
| 21.80.28.29 | 357571613 | 0 |
| 21.80.28.30 | 357571614 | 0 |
| 21.80.28.31 | 357571615 | 0 |
| 21.80.28.32 | 357571616 | 0 |
| 21.80.28.33 | 357571617 | 0 |
| 21.80.28.34 | 357571618 | 0 |
| 21.80.28.35 | 357571619 | 0 |
| 21.80.28.36 | 357571620 | 0 |
| 21.80.28.37 | 357571621 | 0 |
| 21.80.28.38 | 357571622 | 0 |
| 21.80.28.39 | 357571623 | 0 |
| 21.80.28.40 | 357571624 | 0 |
| 21.80.28.41 | 357571625 | 0 |
| 21.80.28.42 | 357571626 | 0 |
| 21.80.28.43 | 357571627 | 0 |
| 21.80.28.44 | 357571628 | 0 |
| 21.80.28.45 | 357571629 | 0 |
| 21.80.28.46 | 357571630 | 0 |
| 21.80.28.47 | 357571631 | 0 |
| 21.80.28.48 | 357571632 | 0 |
| 21.80.28.49 | 357571633 | 0 |
| 21.80.28.50 | 357571634 | 0 |
| 21.80.28.51 | 357571635 | 0 |
| 21.80.28.52 | 357571636 | 0 |
| 21.80.28.53 | 357571637 | 0 |
| 21.80.28.54 | 357571638 | 0 |
| 21.80.28.55 | 357571639 | 0 |
| 21.80.28.56 | 357571640 | 0 |
| 21.80.28.57 | 357571641 | 0 |
| 21.80.28.58 | 357571642 | 0 |
| 21.80.28.59 | 357571643 | 0 |
| 21.80.28.60 | 357571644 | 0 |
| 21.80.28.61 | 357571645 | 0 |
| 21.80.28.62 | 357571646 | 0 |
| 21.80.28.63 | 357571647 | 0 |
| 21.80.28.64 | 357571648 | 0 |
| 21.80.28.65 | 357571649 | 0 |
| 21.80.28.66 | 357571650 | 0 |
| 21.80.28.67 | 357571651 | 0 |
| 21.80.28.68 | 357571652 | 0 |
| 21.80.28.69 | 357571653 | 0 |
| 21.80.28.70 | 357571654 | 0 |
| 21.80.28.71 | 357571655 | 0 |
| 21.80.28.72 | 357571656 | 0 |
| 21.80.28.73 | 357571657 | 0 |
| 21.80.28.74 | 357571658 | 0 |
| 21.80.28.75 | 357571659 | 0 |
| 21.80.28.76 | 357571660 | 0 |
| 21.80.28.77 | 357571661 | 0 |
| 21.80.28.78 | 357571662 | 0 |
| 21.80.28.79 | 357571663 | 0 |
| 21.80.28.80 | 357571664 | 0 |
| 21.80.28.81 | 357571665 | 0 |
| 21.80.28.82 | 357571666 | 0 |
| 21.80.28.83 | 357571667 | 0 |
| 21.80.28.84 | 357571668 | 0 |
| 21.80.28.85 | 357571669 | 0 |