143.33.66 is a class C of IPs

Sample IPs from the class C 143.33.66

143.33.66.229	View precise location of 143.33.66.229 on the map!
143.33.66.117	View precise location of 143.33.66.117 on the map!
143.33.66.74	View precise location of 143.33.66.74 on the map!
143.33.66.235	View precise location of 143.33.66.235 on the map!
143.33.66.218	View precise location of 143.33.66.218 on the map!
143.33.66.193	View precise location of 143.33.66.193 on the map!
143.33.66.113	View precise location of 143.33.66.113 on the map!
143.33.66.155	View precise location of 143.33.66.155 on the map!
143.33.66.238	View precise location of 143.33.66.238 on the map!
143.33.66.169	View precise location of 143.33.66.169 on the map!
143.33.66.87	View precise location of 143.33.66.87 on the map!

10 Random IPs

75.138.238.35	Find precise map location of 75.138.238.35
192.120.215.105	Find precise map location of 192.120.215.105
181.229.230.231	Find precise map location of 181.229.230.231
149.122.210.137	Find precise map location of 149.122.210.137
170.104.19.254	Find precise map location of 170.104.19.254
170.139.86.153	Find precise map location of 170.139.86.153
144.230.41.38	Find precise map location of 144.230.41.38
41.164.111.30	Find precise map location of 41.164.111.30
54.173.220.35	Find precise map location of 54.173.220.35
175.124.132.112	Find precise map location of 175.124.132.112
120.157.214.254	Find precise map location of 120.157.214.254

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