121.166.2 is a class C of IPs

Sample IPs from the class C 121.166.2

121.166.2.38	View precise location of 121.166.2.38 on the map!
121.166.2.113	View precise location of 121.166.2.113 on the map!
121.166.2.74	View precise location of 121.166.2.74 on the map!
121.166.2.124	View precise location of 121.166.2.124 on the map!
121.166.2.102	View precise location of 121.166.2.102 on the map!
121.166.2.186	View precise location of 121.166.2.186 on the map!
121.166.2.151	View precise location of 121.166.2.151 on the map!
121.166.2.43	View precise location of 121.166.2.43 on the map!
121.166.2.138	View precise location of 121.166.2.138 on the map!
121.166.2.65	View precise location of 121.166.2.65 on the map!
121.166.2.93	View precise location of 121.166.2.93 on the map!

10 Random IPs

201.137.173.25	Find precise map location of 201.137.173.25
58.53.92.147	Find precise map location of 58.53.92.147
58.86.11.7	Find precise map location of 58.86.11.7
191.155.141.75	Find precise map location of 191.155.141.75
94.224.151.146	Find precise map location of 94.224.151.146
217.163.71.89	Find precise map location of 217.163.71.89
238.26.85.43	Find precise map location of 238.26.85.43
24.107.31.169	Find precise map location of 24.107.31.169
44.185.157.220	Find precise map location of 44.185.157.220
138.195.236.30	Find precise map location of 138.195.236.30
248.129.71.179	Find precise map location of 248.129.71.179

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