187.128.221 is a class C of IPs

Sample IPs from the class C 187.128.221

187.128.221.154	View precise location of 187.128.221.154 on the map!
187.128.221.48	View precise location of 187.128.221.48 on the map!
187.128.221.27	View precise location of 187.128.221.27 on the map!
187.128.221.1	View precise location of 187.128.221.1 on the map!
187.128.221.147	View precise location of 187.128.221.147 on the map!
187.128.221.249	View precise location of 187.128.221.249 on the map!
187.128.221.79	View precise location of 187.128.221.79 on the map!
187.128.221.131	View precise location of 187.128.221.131 on the map!
187.128.221.177	View precise location of 187.128.221.177 on the map!
187.128.221.164	View precise location of 187.128.221.164 on the map!
187.128.221.191	View precise location of 187.128.221.191 on the map!

10 Random IPs

48.97.169.218	Find precise map location of 48.97.169.218
78.117.241.117	Find precise map location of 78.117.241.117
84.54.166.153	Find precise map location of 84.54.166.153
84.120.246.193	Find precise map location of 84.120.246.193
53.191.73.120	Find precise map location of 53.191.73.120
252.47.150.4	Find precise map location of 252.47.150.4
234.81.247.181	Find precise map location of 234.81.247.181
26.16.59.251	Find precise map location of 26.16.59.251
21.113.216.124	Find precise map location of 21.113.216.124
48.173.89.179	Find precise map location of 48.173.89.179
6.101.121.154	Find precise map location of 6.101.121.154

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