La dirección IP 21.75.16 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 | 16/08/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Columbus | 39,9664 | -83,0128 | 2017-08-16 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2017-08-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.75.16.0 | 357240832 | 0 |
| 21.75.16.1 | 357240833 | 0 |
| 21.75.16.2 | 357240834 | 0 |
| 21.75.16.3 | 357240835 | 0 |
| 21.75.16.4 | 357240836 | 0 |
| 21.75.16.5 | 357240837 | 0 |
| 21.75.16.6 | 357240838 | 0 |
| 21.75.16.7 | 357240839 | 0 |
| 21.75.16.8 | 357240840 | 0 |
| 21.75.16.9 | 357240841 | 0 |
| 21.75.16.10 | 357240842 | 0 |
| 21.75.16.11 | 357240843 | 0 |
| 21.75.16.12 | 357240844 | 0 |
| 21.75.16.13 | 357240845 | 0 |
| 21.75.16.14 | 357240846 | 0 |
| 21.75.16.15 | 357240847 | 0 |
| 21.75.16.16 | 357240848 | 0 |
| 21.75.16.17 | 357240849 | 0 |
| 21.75.16.18 | 357240850 | 0 |
| 21.75.16.19 | 357240851 | 0 |
| 21.75.16.20 | 357240852 | 0 |
| 21.75.16.21 | 357240853 | 0 |
| 21.75.16.22 | 357240854 | 0 |
| 21.75.16.23 | 357240855 | 0 |
| 21.75.16.24 | 357240856 | 0 |
| 21.75.16.25 | 357240857 | 0 |
| 21.75.16.26 | 357240858 | 0 |
| 21.75.16.27 | 357240859 | 0 |
| 21.75.16.28 | 357240860 | 0 |
| 21.75.16.29 | 357240861 | 0 |
| 21.75.16.30 | 357240862 | 0 |
| 21.75.16.31 | 357240863 | 0 |
| 21.75.16.32 | 357240864 | 0 |
| 21.75.16.33 | 357240865 | 0 |
| 21.75.16.34 | 357240866 | 0 |
| 21.75.16.35 | 357240867 | 0 |
| 21.75.16.36 | 357240868 | 0 |
| 21.75.16.37 | 357240869 | 0 |
| 21.75.16.38 | 357240870 | 0 |
| 21.75.16.39 | 357240871 | 0 |
| 21.75.16.40 | 357240872 | 0 |
| 21.75.16.41 | 357240873 | 0 |
| 21.75.16.42 | 357240874 | 0 |
| 21.75.16.43 | 357240875 | 0 |
| 21.75.16.44 | 357240876 | 0 |
| 21.75.16.45 | 357240877 | 0 |
| 21.75.16.46 | 357240878 | 0 |
| 21.75.16.47 | 357240879 | 0 |
| 21.75.16.48 | 357240880 | 0 |
| 21.75.16.49 | 357240881 | 0 |
| 21.75.16.50 | 357240882 | 0 |
| 21.75.16.51 | 357240883 | 0 |
| 21.75.16.52 | 357240884 | 0 |
| 21.75.16.53 | 357240885 | 0 |
| 21.75.16.54 | 357240886 | 0 |
| 21.75.16.55 | 357240887 | 0 |
| 21.75.16.56 | 357240888 | 0 |
| 21.75.16.57 | 357240889 | 0 |
| 21.75.16.58 | 357240890 | 0 |
| 21.75.16.59 | 357240891 | 0 |
| 21.75.16.60 | 357240892 | 0 |
| 21.75.16.61 | 357240893 | 0 |
| 21.75.16.62 | 357240894 | 0 |
| 21.75.16.63 | 357240895 | 0 |
| 21.75.16.64 | 357240896 | 0 |
| 21.75.16.65 | 357240897 | 0 |
| 21.75.16.66 | 357240898 | 0 |
| 21.75.16.67 | 357240899 | 0 |
| 21.75.16.68 | 357240900 | 0 |
| 21.75.16.69 | 357240901 | 0 |
| 21.75.16.70 | 357240902 | 0 |
| 21.75.16.71 | 357240903 | 0 |
| 21.75.16.72 | 357240904 | 0 |
| 21.75.16.73 | 357240905 | 0 |
| 21.75.16.74 | 357240906 | 0 |
| 21.75.16.75 | 357240907 | 0 |
| 21.75.16.76 | 357240908 | 0 |
| 21.75.16.77 | 357240909 | 0 |
| 21.75.16.78 | 357240910 | 0 |
| 21.75.16.79 | 357240911 | 0 |
| 21.75.16.80 | 357240912 | 0 |
| 21.75.16.81 | 357240913 | 0 |
| 21.75.16.82 | 357240914 | 0 |
| 21.75.16.83 | 357240915 | 0 |
| 21.75.16.84 | 357240916 | 0 |
| 21.75.16.85 | 357240917 | 0 |