143.240.11 is a class C of IPs

Sample IPs from the class C 143.240.11

143.240.11.236	View precise location of 143.240.11.236 on the map!
143.240.11.44	View precise location of 143.240.11.44 on the map!
143.240.11.34	View precise location of 143.240.11.34 on the map!
143.240.11.119	View precise location of 143.240.11.119 on the map!
143.240.11.93	View precise location of 143.240.11.93 on the map!
143.240.11.201	View precise location of 143.240.11.201 on the map!
143.240.11.226	View precise location of 143.240.11.226 on the map!
143.240.11.98	View precise location of 143.240.11.98 on the map!
143.240.11.162	View precise location of 143.240.11.162 on the map!
143.240.11.96	View precise location of 143.240.11.96 on the map!
143.240.11.59	View precise location of 143.240.11.59 on the map!

10 Random IPs

238.12.231.23	Find precise map location of 238.12.231.23
20.5.86.122	Find precise map location of 20.5.86.122
189.43.215.25	Find precise map location of 189.43.215.25
187.225.186.181	Find precise map location of 187.225.186.181
154.166.48.154	Find precise map location of 154.166.48.154
111.226.30.77	Find precise map location of 111.226.30.77
216.122.239.145	Find precise map location of 216.122.239.145
152.137.181.175	Find precise map location of 152.137.181.175
91.44.91.145	Find precise map location of 91.44.91.145
155.253.20.244	Find precise map location of 155.253.20.244
108.101.190.31	Find precise map location of 108.101.190.31

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