La dirección IP 21.221.3 es proporcionada por China Education and Research Network Center, que es propiedad de la CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP entre 22.30.204.0 a 22.30.205.255 ). El número de sistema autónomo (ASN) es 4538.
| ASN | 4538 |
| IP que comienzan con | 22.30.204.0 |
| IP que termina con | 22.30.205.255 |
| ASN Nombre | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérica | |
| Registe | |
| Última actualización | 29/10/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Columbus | 39,9664 | -83,0128 | 2017-10-29 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2017-10-29 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.221.3.0 | 366805760 | 0 |
| 21.221.3.1 | 366805761 | 0 |
| 21.221.3.2 | 366805762 | 0 |
| 21.221.3.3 | 366805763 | 0 |
| 21.221.3.4 | 366805764 | 0 |
| 21.221.3.5 | 366805765 | 0 |
| 21.221.3.6 | 366805766 | 0 |
| 21.221.3.7 | 366805767 | 0 |
| 21.221.3.8 | 366805768 | 0 |
| 21.221.3.9 | 366805769 | 0 |
| 21.221.3.10 | 366805770 | 0 |
| 21.221.3.11 | 366805771 | 0 |
| 21.221.3.12 | 366805772 | 0 |
| 21.221.3.13 | 366805773 | 0 |
| 21.221.3.14 | 366805774 | 0 |
| 21.221.3.15 | 366805775 | 0 |
| 21.221.3.16 | 366805776 | 0 |
| 21.221.3.17 | 366805777 | 0 |
| 21.221.3.18 | 366805778 | 0 |
| 21.221.3.19 | 366805779 | 0 |
| 21.221.3.20 | 366805780 | 0 |
| 21.221.3.21 | 366805781 | 0 |
| 21.221.3.22 | 366805782 | 0 |
| 21.221.3.23 | 366805783 | 0 |
| 21.221.3.24 | 366805784 | 0 |
| 21.221.3.25 | 366805785 | 0 |
| 21.221.3.26 | 366805786 | 0 |
| 21.221.3.27 | 366805787 | 0 |
| 21.221.3.28 | 366805788 | 0 |
| 21.221.3.29 | 366805789 | 0 |
| 21.221.3.30 | 366805790 | 0 |
| 21.221.3.31 | 366805791 | 0 |
| 21.221.3.32 | 366805792 | 0 |
| 21.221.3.33 | 366805793 | 0 |
| 21.221.3.34 | 366805794 | 0 |
| 21.221.3.35 | 366805795 | 0 |
| 21.221.3.36 | 366805796 | 0 |
| 21.221.3.37 | 366805797 | 0 |
| 21.221.3.38 | 366805798 | 0 |
| 21.221.3.39 | 366805799 | 0 |
| 21.221.3.40 | 366805800 | 0 |
| 21.221.3.41 | 366805801 | 0 |
| 21.221.3.42 | 366805802 | 0 |
| 21.221.3.43 | 366805803 | 0 |
| 21.221.3.44 | 366805804 | 0 |
| 21.221.3.45 | 366805805 | 0 |
| 21.221.3.46 | 366805806 | 0 |
| 21.221.3.47 | 366805807 | 0 |
| 21.221.3.48 | 366805808 | 0 |
| 21.221.3.49 | 366805809 | 0 |
| 21.221.3.50 | 366805810 | 0 |
| 21.221.3.51 | 366805811 | 0 |
| 21.221.3.52 | 366805812 | 0 |
| 21.221.3.53 | 366805813 | 0 |
| 21.221.3.54 | 366805814 | 0 |
| 21.221.3.55 | 366805815 | 0 |
| 21.221.3.56 | 366805816 | 0 |
| 21.221.3.57 | 366805817 | 0 |
| 21.221.3.58 | 366805818 | 0 |
| 21.221.3.59 | 366805819 | 0 |
| 21.221.3.60 | 366805820 | 0 |
| 21.221.3.61 | 366805821 | 0 |
| 21.221.3.62 | 366805822 | 0 |
| 21.221.3.63 | 366805823 | 0 |
| 21.221.3.64 | 366805824 | 0 |
| 21.221.3.65 | 366805825 | 0 |
| 21.221.3.66 | 366805826 | 0 |
| 21.221.3.67 | 366805827 | 0 |
| 21.221.3.68 | 366805828 | 0 |
| 21.221.3.69 | 366805829 | 0 |
| 21.221.3.70 | 366805830 | 0 |
| 21.221.3.71 | 366805831 | 0 |
| 21.221.3.72 | 366805832 | 0 |
| 21.221.3.73 | 366805833 | 0 |
| 21.221.3.74 | 366805834 | 0 |
| 21.221.3.75 | 366805835 | 0 |
| 21.221.3.76 | 366805836 | 0 |
| 21.221.3.77 | 366805837 | 0 |
| 21.221.3.78 | 366805838 | 0 |
| 21.221.3.79 | 366805839 | 0 |
| 21.221.3.80 | 366805840 | 0 |
| 21.221.3.81 | 366805841 | 0 |
| 21.221.3.82 | 366805842 | 0 |
| 21.221.3.83 | 366805843 | 0 |
| 21.221.3.84 | 366805844 | 0 |
| 21.221.3.85 | 366805845 | 0 |