143.66.202 is a class C of IPs

Sample IPs from the class C 143.66.202

143.66.202.64	View precise location of 143.66.202.64 on the map!
143.66.202.45	View precise location of 143.66.202.45 on the map!
143.66.202.132	View precise location of 143.66.202.132 on the map!
143.66.202.243	View precise location of 143.66.202.243 on the map!
143.66.202.166	View precise location of 143.66.202.166 on the map!
143.66.202.218	View precise location of 143.66.202.218 on the map!
143.66.202.208	View precise location of 143.66.202.208 on the map!
143.66.202.56	View precise location of 143.66.202.56 on the map!
143.66.202.166	View precise location of 143.66.202.166 on the map!
143.66.202.98	View precise location of 143.66.202.98 on the map!
143.66.202.51	View precise location of 143.66.202.51 on the map!

10 Random IPs

233.163.97.156	Find precise map location of 233.163.97.156
247.64.40.207	Find precise map location of 247.64.40.207
211.247.145.151	Find precise map location of 211.247.145.151
119.12.95.148	Find precise map location of 119.12.95.148
154.168.242.147	Find precise map location of 154.168.242.147
255.234.94.112	Find precise map location of 255.234.94.112
103.147.155.216	Find precise map location of 103.147.155.216
83.205.155.212	Find precise map location of 83.205.155.212
161.33.49.71	Find precise map location of 161.33.49.71
53.172.40.118	Find precise map location of 53.172.40.118
70.131.160.8	Find precise map location of 70.131.160.8

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