203.223.21 is a class C of IPs

Sample IPs from the class C 203.223.21

203.223.21.184	View precise location of 203.223.21.184 on the map!
203.223.21.61	View precise location of 203.223.21.61 on the map!
203.223.21.129	View precise location of 203.223.21.129 on the map!
203.223.21.26	View precise location of 203.223.21.26 on the map!
203.223.21.148	View precise location of 203.223.21.148 on the map!
203.223.21.143	View precise location of 203.223.21.143 on the map!
203.223.21.121	View precise location of 203.223.21.121 on the map!
203.223.21.199	View precise location of 203.223.21.199 on the map!
203.223.21.230	View precise location of 203.223.21.230 on the map!
203.223.21.28	View precise location of 203.223.21.28 on the map!
203.223.21.66	View precise location of 203.223.21.66 on the map!

10 Random IPs

243.112.97.35	Find precise map location of 243.112.97.35
242.75.11.61	Find precise map location of 242.75.11.61
125.67.135.208	Find precise map location of 125.67.135.208
248.193.61.11	Find precise map location of 248.193.61.11
225.126.233.58	Find precise map location of 225.126.233.58
109.96.22.81	Find precise map location of 109.96.22.81
42.40.24.89	Find precise map location of 42.40.24.89
90.67.212.110	Find precise map location of 90.67.212.110
114.166.90.186	Find precise map location of 114.166.90.186
226.209.23.62	Find precise map location of 226.209.23.62
92.198.168.171	Find precise map location of 92.198.168.171

TestURI.org is a free web-sniffer.net alternative. It alows you to send custom HTTP request and check the HTTP response.