121.161.166 is a class C of IPs

Sample IPs from the class C 121.161.166

121.161.166.102	View precise location of 121.161.166.102 on the map!
121.161.166.187	View precise location of 121.161.166.187 on the map!
121.161.166.55	View precise location of 121.161.166.55 on the map!
121.161.166.71	View precise location of 121.161.166.71 on the map!
121.161.166.180	View precise location of 121.161.166.180 on the map!
121.161.166.131	View precise location of 121.161.166.131 on the map!
121.161.166.11	View precise location of 121.161.166.11 on the map!
121.161.166.184	View precise location of 121.161.166.184 on the map!
121.161.166.203	View precise location of 121.161.166.203 on the map!
121.161.166.30	View precise location of 121.161.166.30 on the map!
121.161.166.142	View precise location of 121.161.166.142 on the map!

10 Random IPs

241.156.145.76	Find precise map location of 241.156.145.76
231.212.181.244	Find precise map location of 231.212.181.244
152.105.60.60	Find precise map location of 152.105.60.60
238.204.185.40	Find precise map location of 238.204.185.40
37.129.251.186	Find precise map location of 37.129.251.186
133.220.94.171	Find precise map location of 133.220.94.171
107.117.124.89	Find precise map location of 107.117.124.89
84.162.221.221	Find precise map location of 84.162.221.221
246.79.74.194	Find precise map location of 246.79.74.194
35.166.110.199	Find precise map location of 35.166.110.199
198.221.121.66	Find precise map location of 198.221.121.66

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