131.138.128 is a class C of IPs

Sample IPs from the class C 131.138.128

131.138.128.135	View precise location of 131.138.128.135 on the map!
131.138.128.144	View precise location of 131.138.128.144 on the map!
131.138.128.169	View precise location of 131.138.128.169 on the map!
131.138.128.9	View precise location of 131.138.128.9 on the map!
131.138.128.172	View precise location of 131.138.128.172 on the map!
131.138.128.112	View precise location of 131.138.128.112 on the map!
131.138.128.159	View precise location of 131.138.128.159 on the map!
131.138.128.96	View precise location of 131.138.128.96 on the map!
131.138.128.42	View precise location of 131.138.128.42 on the map!
131.138.128.82	View precise location of 131.138.128.82 on the map!
131.138.128.89	View precise location of 131.138.128.89 on the map!

10 Random IPs

96.128.252.189	Find precise map location of 96.128.252.189
55.133.169.221	Find precise map location of 55.133.169.221
158.53.27.132	Find precise map location of 158.53.27.132
77.177.110.196	Find precise map location of 77.177.110.196
121.230.8.87	Find precise map location of 121.230.8.87
121.68.221.218	Find precise map location of 121.68.221.218
240.109.162.31	Find precise map location of 240.109.162.31
112.97.36.82	Find precise map location of 112.97.36.82
226.175.211.167	Find precise map location of 226.175.211.167
39.64.224.214	Find precise map location of 39.64.224.214
64.127.140.249	Find precise map location of 64.127.140.249

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