223.11.121 is a class C of IPs

Sample IPs from the class C 223.11.121

223.11.121.17	View precise location of 223.11.121.17 on the map!
223.11.121.179	View precise location of 223.11.121.179 on the map!
223.11.121.82	View precise location of 223.11.121.82 on the map!
223.11.121.125	View precise location of 223.11.121.125 on the map!
223.11.121.70	View precise location of 223.11.121.70 on the map!
223.11.121.207	View precise location of 223.11.121.207 on the map!
223.11.121.194	View precise location of 223.11.121.194 on the map!
223.11.121.159	View precise location of 223.11.121.159 on the map!
223.11.121.4	View precise location of 223.11.121.4 on the map!
223.11.121.100	View precise location of 223.11.121.100 on the map!
223.11.121.97	View precise location of 223.11.121.97 on the map!

10 Random IPs

205.180.151.120	Find precise map location of 205.180.151.120
238.116.144.92	Find precise map location of 238.116.144.92
32.28.141.90	Find precise map location of 32.28.141.90
106.54.27.160	Find precise map location of 106.54.27.160
23.56.214.87	Find precise map location of 23.56.214.87
160.79.131.132	Find precise map location of 160.79.131.132
126.251.99.7	Find precise map location of 126.251.99.7
176.153.103.93	Find precise map location of 176.153.103.93
249.243.29.24	Find precise map location of 249.243.29.24
71.53.131.70	Find precise map location of 71.53.131.70
78.106.212.165	Find precise map location of 78.106.212.165

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