143.66.9 is a class C of IPs

Sample IPs from the class C 143.66.9

143.66.9.99	View precise location of 143.66.9.99 on the map!
143.66.9.37	View precise location of 143.66.9.37 on the map!
143.66.9.137	View precise location of 143.66.9.137 on the map!
143.66.9.84	View precise location of 143.66.9.84 on the map!
143.66.9.109	View precise location of 143.66.9.109 on the map!
143.66.9.162	View precise location of 143.66.9.162 on the map!
143.66.9.29	View precise location of 143.66.9.29 on the map!
143.66.9.249	View precise location of 143.66.9.249 on the map!
143.66.9.32	View precise location of 143.66.9.32 on the map!
143.66.9.240	View precise location of 143.66.9.240 on the map!
143.66.9.254	View precise location of 143.66.9.254 on the map!

10 Random IPs

80.208.21.112	Find precise map location of 80.208.21.112
229.64.66.192	Find precise map location of 229.64.66.192
11.163.91.150	Find precise map location of 11.163.91.150
208.172.231.37	Find precise map location of 208.172.231.37
102.180.196.156	Find precise map location of 102.180.196.156
192.65.54.41	Find precise map location of 192.65.54.41
144.123.195.90	Find precise map location of 144.123.195.90
117.174.163.100	Find precise map location of 117.174.163.100
101.108.187.82	Find precise map location of 101.108.187.82
188.199.89.75	Find precise map location of 188.199.89.75
164.75.210.154	Find precise map location of 164.75.210.154

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