159.81.143 is a class C of IPs

Sample IPs from the class C 159.81.143

159.81.143.27	View precise location of 159.81.143.27 on the map!
159.81.143.148	View precise location of 159.81.143.148 on the map!
159.81.143.205	View precise location of 159.81.143.205 on the map!
159.81.143.119	View precise location of 159.81.143.119 on the map!
159.81.143.106	View precise location of 159.81.143.106 on the map!
159.81.143.161	View precise location of 159.81.143.161 on the map!
159.81.143.169	View precise location of 159.81.143.169 on the map!
159.81.143.60	View precise location of 159.81.143.60 on the map!
159.81.143.67	View precise location of 159.81.143.67 on the map!
159.81.143.64	View precise location of 159.81.143.64 on the map!
159.81.143.182	View precise location of 159.81.143.182 on the map!

10 Random IPs

11.129.136.39	Find precise map location of 11.129.136.39
66.87.87.98	Find precise map location of 66.87.87.98
70.218.55.205	Find precise map location of 70.218.55.205
214.22.215.80	Find precise map location of 214.22.215.80
72.172.229.162	Find precise map location of 72.172.229.162
160.178.99.77	Find precise map location of 160.178.99.77
32.144.128.55	Find precise map location of 32.144.128.55
221.118.12.54	Find precise map location of 221.118.12.54
119.111.244.64	Find precise map location of 119.111.244.64
45.237.118.82	Find precise map location of 45.237.118.82
123.214.130.183	Find precise map location of 123.214.130.183

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