143.28.212 is a class C of IPs

Sample IPs from the class C 143.28.212

143.28.212.8	View precise location of 143.28.212.8 on the map!
143.28.212.45	View precise location of 143.28.212.45 on the map!
143.28.212.58	View precise location of 143.28.212.58 on the map!
143.28.212.201	View precise location of 143.28.212.201 on the map!
143.28.212.154	View precise location of 143.28.212.154 on the map!
143.28.212.59	View precise location of 143.28.212.59 on the map!
143.28.212.178	View precise location of 143.28.212.178 on the map!
143.28.212.236	View precise location of 143.28.212.236 on the map!
143.28.212.125	View precise location of 143.28.212.125 on the map!
143.28.212.84	View precise location of 143.28.212.84 on the map!
143.28.212.74	View precise location of 143.28.212.74 on the map!

10 Random IPs

101.31.179.153	Find precise map location of 101.31.179.153
30.186.185.240	Find precise map location of 30.186.185.240
121.96.48.222	Find precise map location of 121.96.48.222
245.37.23.34	Find precise map location of 245.37.23.34
167.190.154.47	Find precise map location of 167.190.154.47
122.89.176.116	Find precise map location of 122.89.176.116
218.207.249.11	Find precise map location of 218.207.249.11
208.21.178.173	Find precise map location of 208.21.178.173
86.4.168.182	Find precise map location of 86.4.168.182
6.190.113.40	Find precise map location of 6.190.113.40
88.171.56.143	Find precise map location of 88.171.56.143

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