18.166.12 is a class C of IPs

Sample IPs from the class C 18.166.12

18.166.12.146	View precise location of 18.166.12.146 on the map!
18.166.12.5	View precise location of 18.166.12.5 on the map!
18.166.12.62	View precise location of 18.166.12.62 on the map!
18.166.12.34	View precise location of 18.166.12.34 on the map!
18.166.12.225	View precise location of 18.166.12.225 on the map!
18.166.12.6	View precise location of 18.166.12.6 on the map!
18.166.12.87	View precise location of 18.166.12.87 on the map!
18.166.12.78	View precise location of 18.166.12.78 on the map!
18.166.12.178	View precise location of 18.166.12.178 on the map!
18.166.12.85	View precise location of 18.166.12.85 on the map!
18.166.12.89	View precise location of 18.166.12.89 on the map!

10 Random IPs

234.82.196.241	Find precise map location of 234.82.196.241
250.58.253.138	Find precise map location of 250.58.253.138
154.145.192.148	Find precise map location of 154.145.192.148
240.199.129.157	Find precise map location of 240.199.129.157
218.110.131.222	Find precise map location of 218.110.131.222
201.223.53.2	Find precise map location of 201.223.53.2
143.253.11.191	Find precise map location of 143.253.11.191
179.161.131.251	Find precise map location of 179.161.131.251
38.27.23.176	Find precise map location of 38.27.23.176
27.241.234.209	Find precise map location of 27.241.234.209
89.193.26.208	Find precise map location of 89.193.26.208

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