The IP address 21.90.55 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 | 28/12/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Houston | 29.7633 | -95.3633 | 2018-12-27 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-12-27 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.90.55.0 | 358233856 | 0 |
| 21.90.55.1 | 358233857 | 0 |
| 21.90.55.2 | 358233858 | 0 |
| 21.90.55.3 | 358233859 | 0 |
| 21.90.55.4 | 358233860 | 0 |
| 21.90.55.5 | 358233861 | 0 |
| 21.90.55.6 | 358233862 | 0 |
| 21.90.55.7 | 358233863 | 0 |
| 21.90.55.8 | 358233864 | 0 |
| 21.90.55.9 | 358233865 | 0 |
| 21.90.55.10 | 358233866 | 0 |
| 21.90.55.11 | 358233867 | 0 |
| 21.90.55.12 | 358233868 | 0 |
| 21.90.55.13 | 358233869 | 0 |
| 21.90.55.14 | 358233870 | 0 |
| 21.90.55.15 | 358233871 | 0 |
| 21.90.55.16 | 358233872 | 0 |
| 21.90.55.17 | 358233873 | 0 |
| 21.90.55.18 | 358233874 | 0 |
| 21.90.55.19 | 358233875 | 0 |
| 21.90.55.20 | 358233876 | 0 |
| 21.90.55.21 | 358233877 | 0 |
| 21.90.55.22 | 358233878 | 0 |
| 21.90.55.23 | 358233879 | 0 |
| 21.90.55.24 | 358233880 | 0 |
| 21.90.55.25 | 358233881 | 0 |
| 21.90.55.26 | 358233882 | 0 |
| 21.90.55.27 | 358233883 | 0 |
| 21.90.55.28 | 358233884 | 0 |
| 21.90.55.29 | 358233885 | 0 |
| 21.90.55.30 | 358233886 | 0 |
| 21.90.55.31 | 358233887 | 0 |
| 21.90.55.32 | 358233888 | 0 |
| 21.90.55.33 | 358233889 | 0 |
| 21.90.55.34 | 358233890 | 0 |
| 21.90.55.35 | 358233891 | 0 |
| 21.90.55.36 | 358233892 | 0 |
| 21.90.55.37 | 358233893 | 0 |
| 21.90.55.38 | 358233894 | 0 |
| 21.90.55.39 | 358233895 | 0 |
| 21.90.55.40 | 358233896 | 0 |
| 21.90.55.41 | 358233897 | 0 |
| 21.90.55.42 | 358233898 | 0 |
| 21.90.55.43 | 358233899 | 0 |
| 21.90.55.44 | 358233900 | 0 |
| 21.90.55.45 | 358233901 | 0 |
| 21.90.55.46 | 358233902 | 0 |
| 21.90.55.47 | 358233903 | 0 |
| 21.90.55.48 | 358233904 | 0 |
| 21.90.55.49 | 358233905 | 0 |
| 21.90.55.50 | 358233906 | 0 |
| 21.90.55.51 | 358233907 | 0 |
| 21.90.55.52 | 358233908 | 0 |
| 21.90.55.53 | 358233909 | 0 |
| 21.90.55.54 | 358233910 | 0 |
| 21.90.55.55 | 358233911 | 0 |
| 21.90.55.56 | 358233912 | 0 |
| 21.90.55.57 | 358233913 | 0 |
| 21.90.55.58 | 358233914 | 0 |
| 21.90.55.59 | 358233915 | 0 |
| 21.90.55.60 | 358233916 | 0 |
| 21.90.55.61 | 358233917 | 0 |
| 21.90.55.62 | 358233918 | 0 |
| 21.90.55.63 | 358233919 | 0 |
| 21.90.55.64 | 358233920 | 0 |
| 21.90.55.65 | 358233921 | 0 |
| 21.90.55.66 | 358233922 | 0 |
| 21.90.55.67 | 358233923 | 0 |
| 21.90.55.68 | 358233924 | 0 |
| 21.90.55.69 | 358233925 | 0 |
| 21.90.55.70 | 358233926 | 0 |
| 21.90.55.71 | 358233927 | 0 |
| 21.90.55.72 | 358233928 | 0 |
| 21.90.55.73 | 358233929 | 0 |
| 21.90.55.74 | 358233930 | 0 |
| 21.90.55.75 | 358233931 | 0 |
| 21.90.55.76 | 358233932 | 0 |
| 21.90.55.77 | 358233933 | 0 |
| 21.90.55.78 | 358233934 | 0 |
| 21.90.55.79 | 358233935 | 0 |
| 21.90.55.80 | 358233936 | 0 |
| 21.90.55.81 | 358233937 | 0 |
| 21.90.55.82 | 358233938 | 0 |
| 21.90.55.83 | 358233939 | 0 |
| 21.90.55.84 | 358233940 | 0 |
| 21.90.55.85 | 358233941 | 0 |