66.66.138 is a class C of IPs

Sample IPs from the class C 66.66.138

66.66.138.43	View precise location of 66.66.138.43 on the map!
66.66.138.72	View precise location of 66.66.138.72 on the map!
66.66.138.81	View precise location of 66.66.138.81 on the map!
66.66.138.185	View precise location of 66.66.138.185 on the map!
66.66.138.211	View precise location of 66.66.138.211 on the map!
66.66.138.65	View precise location of 66.66.138.65 on the map!
66.66.138.194	View precise location of 66.66.138.194 on the map!
66.66.138.221	View precise location of 66.66.138.221 on the map!
66.66.138.197	View precise location of 66.66.138.197 on the map!
66.66.138.188	View precise location of 66.66.138.188 on the map!
66.66.138.126	View precise location of 66.66.138.126 on the map!

10 Random IPs

12.21.186.126	Find precise map location of 12.21.186.126
230.174.249.60	Find precise map location of 230.174.249.60
13.71.78.143	Find precise map location of 13.71.78.143
225.61.180.22	Find precise map location of 225.61.180.22
85.117.182.103	Find precise map location of 85.117.182.103
49.84.49.104	Find precise map location of 49.84.49.104
255.23.169.16	Find precise map location of 255.23.169.16
181.169.130.243	Find precise map location of 181.169.130.243
26.229.92.160	Find precise map location of 26.229.92.160
66.153.161.134	Find precise map location of 66.153.161.134
30.98.50.54	Find precise map location of 30.98.50.54

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