231.3 is a class B of IPs

Sample IPs from the class B 231.3

231.3.84.104	View precise location of 231.3.84.104 on the map!
231.3.111.27	View precise location of 231.3.111.27 on the map!
231.3.65.130	View precise location of 231.3.65.130 on the map!
231.3.141.182	View precise location of 231.3.141.182 on the map!
231.3.80.58	View precise location of 231.3.80.58 on the map!
231.3.20.205	View precise location of 231.3.20.205 on the map!
231.3.135.29	View precise location of 231.3.135.29 on the map!
231.3.193.248	View precise location of 231.3.193.248 on the map!
231.3.102.162	View precise location of 231.3.102.162 on the map!
231.3.24.47	View precise location of 231.3.24.47 on the map!
231.3.135.5	View precise location of 231.3.135.5 on the map!

10 Random IPs

121.83.85.212	Find precise map location of 121.83.85.212
206.135.228.32	Find precise map location of 206.135.228.32
245.189.62.159	Find precise map location of 245.189.62.159
96.132.87.172	Find precise map location of 96.132.87.172
251.177.99.85	Find precise map location of 251.177.99.85
236.222.185.87	Find precise map location of 236.222.185.87
104.48.165.169	Find precise map location of 104.48.165.169
52.103.225.107	Find precise map location of 52.103.225.107
143.51.97.153	Find precise map location of 143.51.97.153
14.14.3.137	Find precise map location of 14.14.3.137
150.99.96.128	Find precise map location of 150.99.96.128

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