181.143.15 is a class C of IPs

Sample IPs from the class C 181.143.15

181.143.15.135	View precise location of 181.143.15.135 on the map!
181.143.15.66	View precise location of 181.143.15.66 on the map!
181.143.15.23	View precise location of 181.143.15.23 on the map!
181.143.15.36	View precise location of 181.143.15.36 on the map!
181.143.15.246	View precise location of 181.143.15.246 on the map!
181.143.15.14	View precise location of 181.143.15.14 on the map!
181.143.15.52	View precise location of 181.143.15.52 on the map!
181.143.15.42	View precise location of 181.143.15.42 on the map!
181.143.15.241	View precise location of 181.143.15.241 on the map!
181.143.15.111	View precise location of 181.143.15.111 on the map!
181.143.15.218	View precise location of 181.143.15.218 on the map!

10 Random IPs

247.146.213.113	Find precise map location of 247.146.213.113
19.139.186.193	Find precise map location of 19.139.186.193
251.18.216.54	Find precise map location of 251.18.216.54
208.3.151.143	Find precise map location of 208.3.151.143
164.215.178.139	Find precise map location of 164.215.178.139
110.176.8.40	Find precise map location of 110.176.8.40
230.216.175.204	Find precise map location of 230.216.175.204
17.48.117.196	Find precise map location of 17.48.117.196
170.184.147.35	Find precise map location of 170.184.147.35
56.97.195.83	Find precise map location of 56.97.195.83
162.141.50.221	Find precise map location of 162.141.50.221

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