231.142.16 is a class C of IPs

Sample IPs from the class C 231.142.16

231.142.16.6	View precise location of 231.142.16.6 on the map!
231.142.16.252	View precise location of 231.142.16.252 on the map!
231.142.16.236	View precise location of 231.142.16.236 on the map!
231.142.16.75	View precise location of 231.142.16.75 on the map!
231.142.16.223	View precise location of 231.142.16.223 on the map!
231.142.16.78	View precise location of 231.142.16.78 on the map!
231.142.16.141	View precise location of 231.142.16.141 on the map!
231.142.16.17	View precise location of 231.142.16.17 on the map!
231.142.16.145	View precise location of 231.142.16.145 on the map!
231.142.16.24	View precise location of 231.142.16.24 on the map!
231.142.16.226	View precise location of 231.142.16.226 on the map!

10 Random IPs

108.241.143.18	Find precise map location of 108.241.143.18
29.180.195.238	Find precise map location of 29.180.195.238
177.138.4.3	Find precise map location of 177.138.4.3
150.199.69.37	Find precise map location of 150.199.69.37
70.37.107.244	Find precise map location of 70.37.107.244
250.68.138.156	Find precise map location of 250.68.138.156
23.111.32.134	Find precise map location of 23.111.32.134
147.209.46.82	Find precise map location of 147.209.46.82
247.118.100.253	Find precise map location of 247.118.100.253
34.42.194.186	Find precise map location of 34.42.194.186
82.83.21.64	Find precise map location of 82.83.21.64

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