The IP address 21.78.57 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 | 08/11/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-11-08 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-11-08 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.78.57.0 | 357447936 | 0 |
| 21.78.57.1 | 357447937 | 0 |
| 21.78.57.2 | 357447938 | 0 |
| 21.78.57.3 | 357447939 | 0 |
| 21.78.57.4 | 357447940 | 0 |
| 21.78.57.5 | 357447941 | 0 |
| 21.78.57.6 | 357447942 | 0 |
| 21.78.57.7 | 357447943 | 0 |
| 21.78.57.8 | 357447944 | 0 |
| 21.78.57.9 | 357447945 | 0 |
| 21.78.57.10 | 357447946 | 0 |
| 21.78.57.11 | 357447947 | 0 |
| 21.78.57.12 | 357447948 | 0 |
| 21.78.57.13 | 357447949 | 0 |
| 21.78.57.14 | 357447950 | 0 |
| 21.78.57.15 | 357447951 | 0 |
| 21.78.57.16 | 357447952 | 0 |
| 21.78.57.17 | 357447953 | 0 |
| 21.78.57.18 | 357447954 | 0 |
| 21.78.57.19 | 357447955 | 0 |
| 21.78.57.20 | 357447956 | 0 |
| 21.78.57.21 | 357447957 | 0 |
| 21.78.57.22 | 357447958 | 0 |
| 21.78.57.23 | 357447959 | 0 |
| 21.78.57.24 | 357447960 | 0 |
| 21.78.57.25 | 357447961 | 0 |
| 21.78.57.26 | 357447962 | 0 |
| 21.78.57.27 | 357447963 | 0 |
| 21.78.57.28 | 357447964 | 0 |
| 21.78.57.29 | 357447965 | 0 |
| 21.78.57.30 | 357447966 | 0 |
| 21.78.57.31 | 357447967 | 0 |
| 21.78.57.32 | 357447968 | 0 |
| 21.78.57.33 | 357447969 | 0 |
| 21.78.57.34 | 357447970 | 0 |
| 21.78.57.35 | 357447971 | 0 |
| 21.78.57.36 | 357447972 | 0 |
| 21.78.57.37 | 357447973 | 0 |
| 21.78.57.38 | 357447974 | 0 |
| 21.78.57.39 | 357447975 | 0 |
| 21.78.57.40 | 357447976 | 0 |
| 21.78.57.41 | 357447977 | 0 |
| 21.78.57.42 | 357447978 | 0 |
| 21.78.57.43 | 357447979 | 0 |
| 21.78.57.44 | 357447980 | 0 |
| 21.78.57.45 | 357447981 | 0 |
| 21.78.57.46 | 357447982 | 0 |
| 21.78.57.47 | 357447983 | 0 |
| 21.78.57.48 | 357447984 | 0 |
| 21.78.57.49 | 357447985 | 0 |
| 21.78.57.50 | 357447986 | 0 |
| 21.78.57.51 | 357447987 | 0 |
| 21.78.57.52 | 357447988 | 0 |
| 21.78.57.53 | 357447989 | 0 |
| 21.78.57.54 | 357447990 | 0 |
| 21.78.57.55 | 357447991 | 0 |
| 21.78.57.56 | 357447992 | 0 |
| 21.78.57.57 | 357447993 | 0 |
| 21.78.57.58 | 357447994 | 0 |
| 21.78.57.59 | 357447995 | 0 |
| 21.78.57.60 | 357447996 | 0 |
| 21.78.57.61 | 357447997 | 0 |
| 21.78.57.62 | 357447998 | 0 |
| 21.78.57.63 | 357447999 | 0 |
| 21.78.57.64 | 357448000 | 0 |
| 21.78.57.65 | 357448001 | 0 |
| 21.78.57.66 | 357448002 | 0 |
| 21.78.57.67 | 357448003 | 0 |
| 21.78.57.68 | 357448004 | 0 |
| 21.78.57.69 | 357448005 | 0 |
| 21.78.57.70 | 357448006 | 0 |
| 21.78.57.71 | 357448007 | 0 |
| 21.78.57.72 | 357448008 | 0 |
| 21.78.57.73 | 357448009 | 0 |
| 21.78.57.74 | 357448010 | 0 |
| 21.78.57.75 | 357448011 | 0 |
| 21.78.57.76 | 357448012 | 0 |
| 21.78.57.77 | 357448013 | 0 |
| 21.78.57.78 | 357448014 | 0 |
| 21.78.57.79 | 357448015 | 0 |
| 21.78.57.80 | 357448016 | 0 |
| 21.78.57.81 | 357448017 | 0 |
| 21.78.57.82 | 357448018 | 0 |
| 21.78.57.83 | 357448019 | 0 |
| 21.78.57.84 | 357448020 | 0 |
| 21.78.57.85 | 357448021 | 0 |