231.144.75 is a class C of IPs

Sample IPs from the class C 231.144.75

231.144.75.140	View precise location of 231.144.75.140 on the map!
231.144.75.224	View precise location of 231.144.75.224 on the map!
231.144.75.95	View precise location of 231.144.75.95 on the map!
231.144.75.200	View precise location of 231.144.75.200 on the map!
231.144.75.222	View precise location of 231.144.75.222 on the map!
231.144.75.174	View precise location of 231.144.75.174 on the map!
231.144.75.89	View precise location of 231.144.75.89 on the map!
231.144.75.209	View precise location of 231.144.75.209 on the map!
231.144.75.196	View precise location of 231.144.75.196 on the map!
231.144.75.112	View precise location of 231.144.75.112 on the map!
231.144.75.151	View precise location of 231.144.75.151 on the map!

10 Random IPs

94.199.243.65	Find precise map location of 94.199.243.65
187.135.231.29	Find precise map location of 187.135.231.29
20.75.241.241	Find precise map location of 20.75.241.241
43.32.15.81	Find precise map location of 43.32.15.81
189.20.245.57	Find precise map location of 189.20.245.57
189.239.15.82	Find precise map location of 189.239.15.82
93.82.43.79	Find precise map location of 93.82.43.79
120.233.134.149	Find precise map location of 120.233.134.149
140.117.206.18	Find precise map location of 140.117.206.18
8.106.96.50	Find precise map location of 8.106.96.50
153.110.13.236	Find precise map location of 153.110.13.236

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