The IP address 21.71.37 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 | 26/01/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2018-01-25 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-01-25 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.71.37.0 | 356984064 | 0 |
| 21.71.37.1 | 356984065 | 0 |
| 21.71.37.2 | 356984066 | 0 |
| 21.71.37.3 | 356984067 | 0 |
| 21.71.37.4 | 356984068 | 0 |
| 21.71.37.5 | 356984069 | 0 |
| 21.71.37.6 | 356984070 | 0 |
| 21.71.37.7 | 356984071 | 0 |
| 21.71.37.8 | 356984072 | 0 |
| 21.71.37.9 | 356984073 | 0 |
| 21.71.37.10 | 356984074 | 0 |
| 21.71.37.11 | 356984075 | 0 |
| 21.71.37.12 | 356984076 | 0 |
| 21.71.37.13 | 356984077 | 0 |
| 21.71.37.14 | 356984078 | 0 |
| 21.71.37.15 | 356984079 | 0 |
| 21.71.37.16 | 356984080 | 0 |
| 21.71.37.17 | 356984081 | 0 |
| 21.71.37.18 | 356984082 | 0 |
| 21.71.37.19 | 356984083 | 0 |
| 21.71.37.20 | 356984084 | 0 |
| 21.71.37.21 | 356984085 | 0 |
| 21.71.37.22 | 356984086 | 0 |
| 21.71.37.23 | 356984087 | 0 |
| 21.71.37.24 | 356984088 | 0 |
| 21.71.37.25 | 356984089 | 0 |
| 21.71.37.26 | 356984090 | 0 |
| 21.71.37.27 | 356984091 | 0 |
| 21.71.37.28 | 356984092 | 0 |
| 21.71.37.29 | 356984093 | 0 |
| 21.71.37.30 | 356984094 | 0 |
| 21.71.37.31 | 356984095 | 0 |
| 21.71.37.32 | 356984096 | 0 |
| 21.71.37.33 | 356984097 | 0 |
| 21.71.37.34 | 356984098 | 0 |
| 21.71.37.35 | 356984099 | 0 |
| 21.71.37.36 | 356984100 | 0 |
| 21.71.37.37 | 356984101 | 0 |
| 21.71.37.38 | 356984102 | 0 |
| 21.71.37.39 | 356984103 | 0 |
| 21.71.37.40 | 356984104 | 0 |
| 21.71.37.41 | 356984105 | 0 |
| 21.71.37.42 | 356984106 | 0 |
| 21.71.37.43 | 356984107 | 0 |
| 21.71.37.44 | 356984108 | 0 |
| 21.71.37.45 | 356984109 | 0 |
| 21.71.37.46 | 356984110 | 0 |
| 21.71.37.47 | 356984111 | 0 |
| 21.71.37.48 | 356984112 | 0 |
| 21.71.37.49 | 356984113 | 0 |
| 21.71.37.50 | 356984114 | 0 |
| 21.71.37.51 | 356984115 | 0 |
| 21.71.37.52 | 356984116 | 0 |
| 21.71.37.53 | 356984117 | 0 |
| 21.71.37.54 | 356984118 | 0 |
| 21.71.37.55 | 356984119 | 0 |
| 21.71.37.56 | 356984120 | 0 |
| 21.71.37.57 | 356984121 | 0 |
| 21.71.37.58 | 356984122 | 0 |
| 21.71.37.59 | 356984123 | 0 |
| 21.71.37.60 | 356984124 | 0 |
| 21.71.37.61 | 356984125 | 0 |
| 21.71.37.62 | 356984126 | 0 |
| 21.71.37.63 | 356984127 | 0 |
| 21.71.37.64 | 356984128 | 0 |
| 21.71.37.65 | 356984129 | 0 |
| 21.71.37.66 | 356984130 | 0 |
| 21.71.37.67 | 356984131 | 0 |
| 21.71.37.68 | 356984132 | 0 |
| 21.71.37.69 | 356984133 | 0 |
| 21.71.37.70 | 356984134 | 0 |
| 21.71.37.71 | 356984135 | 0 |
| 21.71.37.72 | 356984136 | 0 |
| 21.71.37.73 | 356984137 | 0 |
| 21.71.37.74 | 356984138 | 0 |
| 21.71.37.75 | 356984139 | 0 |
| 21.71.37.76 | 356984140 | 0 |
| 21.71.37.77 | 356984141 | 0 |
| 21.71.37.78 | 356984142 | 0 |
| 21.71.37.79 | 356984143 | 0 |
| 21.71.37.80 | 356984144 | 0 |
| 21.71.37.81 | 356984145 | 0 |
| 21.71.37.82 | 356984146 | 0 |
| 21.71.37.83 | 356984147 | 0 |
| 21.71.37.84 | 356984148 | 0 |
| 21.71.37.85 | 356984149 | 0 |