143.40.253 is a class C of IPs

Sample IPs from the class C 143.40.253

143.40.253.182	View precise location of 143.40.253.182 on the map!
143.40.253.65	View precise location of 143.40.253.65 on the map!
143.40.253.170	View precise location of 143.40.253.170 on the map!
143.40.253.153	View precise location of 143.40.253.153 on the map!
143.40.253.229	View precise location of 143.40.253.229 on the map!
143.40.253.90	View precise location of 143.40.253.90 on the map!
143.40.253.106	View precise location of 143.40.253.106 on the map!
143.40.253.182	View precise location of 143.40.253.182 on the map!
143.40.253.177	View precise location of 143.40.253.177 on the map!
143.40.253.110	View precise location of 143.40.253.110 on the map!
143.40.253.74	View precise location of 143.40.253.74 on the map!

10 Random IPs

130.36.146.174	Find precise map location of 130.36.146.174
212.150.52.102	Find precise map location of 212.150.52.102
72.140.166.246	Find precise map location of 72.140.166.246
42.134.24.110	Find precise map location of 42.134.24.110
147.61.118.86	Find precise map location of 147.61.118.86
126.140.130.61	Find precise map location of 126.140.130.61
200.84.172.139	Find precise map location of 200.84.172.139
26.250.86.211	Find precise map location of 26.250.86.211
95.127.228.234	Find precise map location of 95.127.228.234
128.133.69.54	Find precise map location of 128.133.69.54
252.118.111.83	Find precise map location of 252.118.111.83

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