231.20.87 is a class C of IPs

Sample IPs from the class C 231.20.87

231.20.87.255	View precise location of 231.20.87.255 on the map!
231.20.87.117	View precise location of 231.20.87.117 on the map!
231.20.87.30	View precise location of 231.20.87.30 on the map!
231.20.87.209	View precise location of 231.20.87.209 on the map!
231.20.87.35	View precise location of 231.20.87.35 on the map!
231.20.87.97	View precise location of 231.20.87.97 on the map!
231.20.87.118	View precise location of 231.20.87.118 on the map!
231.20.87.39	View precise location of 231.20.87.39 on the map!
231.20.87.232	View precise location of 231.20.87.232 on the map!
231.20.87.206	View precise location of 231.20.87.206 on the map!
231.20.87.181	View precise location of 231.20.87.181 on the map!

10 Random IPs

44.13.118.72	Find precise map location of 44.13.118.72
123.149.164.102	Find precise map location of 123.149.164.102
62.176.216.53	Find precise map location of 62.176.216.53
49.128.80.194	Find precise map location of 49.128.80.194
89.255.5.103	Find precise map location of 89.255.5.103
119.16.11.97	Find precise map location of 119.16.11.97
95.68.79.47	Find precise map location of 95.68.79.47
178.15.137.51	Find precise map location of 178.15.137.51
167.220.208.3	Find precise map location of 167.220.208.3
247.36.227.16	Find precise map location of 247.36.227.16
178.147.215.64	Find precise map location of 178.147.215.64

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