143.123.189 is a class C of IPs

Sample IPs from the class C 143.123.189

143.123.189.241	View precise location of 143.123.189.241 on the map!
143.123.189.22	View precise location of 143.123.189.22 on the map!
143.123.189.193	View precise location of 143.123.189.193 on the map!
143.123.189.187	View precise location of 143.123.189.187 on the map!
143.123.189.21	View precise location of 143.123.189.21 on the map!
143.123.189.7	View precise location of 143.123.189.7 on the map!
143.123.189.186	View precise location of 143.123.189.186 on the map!
143.123.189.62	View precise location of 143.123.189.62 on the map!
143.123.189.56	View precise location of 143.123.189.56 on the map!
143.123.189.36	View precise location of 143.123.189.36 on the map!
143.123.189.161	View precise location of 143.123.189.161 on the map!

10 Random IPs

139.247.161.107	Find precise map location of 139.247.161.107
204.68.106.152	Find precise map location of 204.68.106.152
180.81.15.118	Find precise map location of 180.81.15.118
104.118.158.37	Find precise map location of 104.118.158.37
127.243.188.100	Find precise map location of 127.243.188.100
107.150.212.65	Find precise map location of 107.150.212.65
29.83.61.148	Find precise map location of 29.83.61.148
4.137.88.160	Find precise map location of 4.137.88.160
91.194.218.68	Find precise map location of 91.194.218.68
249.178.60.200	Find precise map location of 249.178.60.200
204.143.102.203	Find precise map location of 204.143.102.203

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