L'indirizzo IP 21.8.175 è fornito da China Education and Research Network Center, che è di proprietà del CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP tra 22.30.204.0 a 22.30.205.255 ). Il numero di sistema autonomo (ASN) è 4538.
| ASN | 4538 |
| IP inizia con | 22.30.204.0 |
| IP finale con | 22.30.205.255 |
| ASN Nome | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numerico | |
| Registe | |
| Ultimo aggiornamento | 13/02/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Columbus | 39,9664 | -83,0128 | 2018-02-13 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2018-02-13 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.8.175.0 | 352890624 | 0 |
| 21.8.175.1 | 352890625 | 0 |
| 21.8.175.2 | 352890626 | 0 |
| 21.8.175.3 | 352890627 | 0 |
| 21.8.175.4 | 352890628 | 0 |
| 21.8.175.5 | 352890629 | 0 |
| 21.8.175.6 | 352890630 | 0 |
| 21.8.175.7 | 352890631 | 0 |
| 21.8.175.8 | 352890632 | 0 |
| 21.8.175.9 | 352890633 | 0 |
| 21.8.175.10 | 352890634 | 0 |
| 21.8.175.11 | 352890635 | 0 |
| 21.8.175.12 | 352890636 | 0 |
| 21.8.175.13 | 352890637 | 0 |
| 21.8.175.14 | 352890638 | 0 |
| 21.8.175.15 | 352890639 | 0 |
| 21.8.175.16 | 352890640 | 0 |
| 21.8.175.17 | 352890641 | 0 |
| 21.8.175.18 | 352890642 | 0 |
| 21.8.175.19 | 352890643 | 0 |
| 21.8.175.20 | 352890644 | 0 |
| 21.8.175.21 | 352890645 | 0 |
| 21.8.175.22 | 352890646 | 0 |
| 21.8.175.23 | 352890647 | 0 |
| 21.8.175.24 | 352890648 | 0 |
| 21.8.175.25 | 352890649 | 0 |
| 21.8.175.26 | 352890650 | 0 |
| 21.8.175.27 | 352890651 | 0 |
| 21.8.175.28 | 352890652 | 0 |
| 21.8.175.29 | 352890653 | 0 |
| 21.8.175.30 | 352890654 | 0 |
| 21.8.175.31 | 352890655 | 0 |
| 21.8.175.32 | 352890656 | 0 |
| 21.8.175.33 | 352890657 | 0 |
| 21.8.175.34 | 352890658 | 0 |
| 21.8.175.35 | 352890659 | 0 |
| 21.8.175.36 | 352890660 | 0 |
| 21.8.175.37 | 352890661 | 0 |
| 21.8.175.38 | 352890662 | 0 |
| 21.8.175.39 | 352890663 | 0 |
| 21.8.175.40 | 352890664 | 0 |
| 21.8.175.41 | 352890665 | 0 |
| 21.8.175.42 | 352890666 | 0 |
| 21.8.175.43 | 352890667 | 0 |
| 21.8.175.44 | 352890668 | 0 |
| 21.8.175.45 | 352890669 | 0 |
| 21.8.175.46 | 352890670 | 0 |
| 21.8.175.47 | 352890671 | 0 |
| 21.8.175.48 | 352890672 | 0 |
| 21.8.175.49 | 352890673 | 0 |
| 21.8.175.50 | 352890674 | 0 |
| 21.8.175.51 | 352890675 | 0 |
| 21.8.175.52 | 352890676 | 0 |
| 21.8.175.53 | 352890677 | 0 |
| 21.8.175.54 | 352890678 | 0 |
| 21.8.175.55 | 352890679 | 0 |
| 21.8.175.56 | 352890680 | 0 |
| 21.8.175.57 | 352890681 | 0 |
| 21.8.175.58 | 352890682 | 0 |
| 21.8.175.59 | 352890683 | 0 |
| 21.8.175.60 | 352890684 | 0 |
| 21.8.175.61 | 352890685 | 0 |
| 21.8.175.62 | 352890686 | 0 |
| 21.8.175.63 | 352890687 | 0 |
| 21.8.175.64 | 352890688 | 0 |
| 21.8.175.65 | 352890689 | 0 |
| 21.8.175.66 | 352890690 | 0 |
| 21.8.175.67 | 352890691 | 0 |
| 21.8.175.68 | 352890692 | 0 |
| 21.8.175.69 | 352890693 | 0 |
| 21.8.175.70 | 352890694 | 0 |
| 21.8.175.71 | 352890695 | 0 |
| 21.8.175.72 | 352890696 | 0 |
| 21.8.175.73 | 352890697 | 0 |
| 21.8.175.74 | 352890698 | 0 |
| 21.8.175.75 | 352890699 | 0 |
| 21.8.175.76 | 352890700 | 0 |
| 21.8.175.77 | 352890701 | 0 |
| 21.8.175.78 | 352890702 | 0 |
| 21.8.175.79 | 352890703 | 0 |
| 21.8.175.80 | 352890704 | 0 |
| 21.8.175.81 | 352890705 | 0 |
| 21.8.175.82 | 352890706 | 0 |
| 21.8.175.83 | 352890707 | 0 |
| 21.8.175.84 | 352890708 | 0 |
| 21.8.175.85 | 352890709 | 0 |