Les adresses IP débutant par 21.80.67 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 | 17/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Columbus | 39,9664 | -83,0128 | 2017-08-16 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-08-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.80.67.0 | 357581568 | 0 |
| 21.80.67.1 | 357581569 | 0 |
| 21.80.67.2 | 357581570 | 0 |
| 21.80.67.3 | 357581571 | 0 |
| 21.80.67.4 | 357581572 | 0 |
| 21.80.67.5 | 357581573 | 0 |
| 21.80.67.6 | 357581574 | 0 |
| 21.80.67.7 | 357581575 | 0 |
| 21.80.67.8 | 357581576 | 0 |
| 21.80.67.9 | 357581577 | 0 |
| 21.80.67.10 | 357581578 | 0 |
| 21.80.67.11 | 357581579 | 0 |
| 21.80.67.12 | 357581580 | 0 |
| 21.80.67.13 | 357581581 | 0 |
| 21.80.67.14 | 357581582 | 0 |
| 21.80.67.15 | 357581583 | 0 |
| 21.80.67.16 | 357581584 | 0 |
| 21.80.67.17 | 357581585 | 0 |
| 21.80.67.18 | 357581586 | 0 |
| 21.80.67.19 | 357581587 | 0 |
| 21.80.67.20 | 357581588 | 0 |
| 21.80.67.21 | 357581589 | 0 |
| 21.80.67.22 | 357581590 | 0 |
| 21.80.67.23 | 357581591 | 0 |
| 21.80.67.24 | 357581592 | 0 |
| 21.80.67.25 | 357581593 | 0 |
| 21.80.67.26 | 357581594 | 0 |
| 21.80.67.27 | 357581595 | 0 |
| 21.80.67.28 | 357581596 | 0 |
| 21.80.67.29 | 357581597 | 0 |
| 21.80.67.30 | 357581598 | 0 |
| 21.80.67.31 | 357581599 | 0 |
| 21.80.67.32 | 357581600 | 0 |
| 21.80.67.33 | 357581601 | 0 |
| 21.80.67.34 | 357581602 | 0 |
| 21.80.67.35 | 357581603 | 0 |
| 21.80.67.36 | 357581604 | 0 |
| 21.80.67.37 | 357581605 | 0 |
| 21.80.67.38 | 357581606 | 0 |
| 21.80.67.39 | 357581607 | 0 |
| 21.80.67.40 | 357581608 | 0 |
| 21.80.67.41 | 357581609 | 0 |
| 21.80.67.42 | 357581610 | 0 |
| 21.80.67.43 | 357581611 | 0 |
| 21.80.67.44 | 357581612 | 0 |
| 21.80.67.45 | 357581613 | 0 |
| 21.80.67.46 | 357581614 | 0 |
| 21.80.67.47 | 357581615 | 0 |
| 21.80.67.48 | 357581616 | 0 |
| 21.80.67.49 | 357581617 | 0 |
| 21.80.67.50 | 357581618 | 0 |
| 21.80.67.51 | 357581619 | 0 |
| 21.80.67.52 | 357581620 | 0 |
| 21.80.67.53 | 357581621 | 0 |
| 21.80.67.54 | 357581622 | 0 |
| 21.80.67.55 | 357581623 | 0 |
| 21.80.67.56 | 357581624 | 0 |
| 21.80.67.57 | 357581625 | 0 |
| 21.80.67.58 | 357581626 | 0 |
| 21.80.67.59 | 357581627 | 0 |
| 21.80.67.60 | 357581628 | 0 |
| 21.80.67.61 | 357581629 | 0 |
| 21.80.67.62 | 357581630 | 0 |
| 21.80.67.63 | 357581631 | 0 |
| 21.80.67.64 | 357581632 | 0 |
| 21.80.67.65 | 357581633 | 0 |
| 21.80.67.66 | 357581634 | 0 |
| 21.80.67.67 | 357581635 | 0 |
| 21.80.67.68 | 357581636 | 0 |
| 21.80.67.69 | 357581637 | 0 |
| 21.80.67.70 | 357581638 | 0 |
| 21.80.67.71 | 357581639 | 0 |
| 21.80.67.72 | 357581640 | 0 |
| 21.80.67.73 | 357581641 | 0 |
| 21.80.67.74 | 357581642 | 0 |
| 21.80.67.75 | 357581643 | 0 |
| 21.80.67.76 | 357581644 | 0 |
| 21.80.67.77 | 357581645 | 0 |
| 21.80.67.78 | 357581646 | 0 |
| 21.80.67.79 | 357581647 | 0 |
| 21.80.67.80 | 357581648 | 0 |
| 21.80.67.81 | 357581649 | 0 |
| 21.80.67.82 | 357581650 | 0 |
| 21.80.67.83 | 357581651 | 0 |
| 21.80.67.84 | 357581652 | 0 |
| 21.80.67.85 | 357581653 | 0 |