83.187.221 is a class C of IPs

Sample IPs from the class C 83.187.221

83.187.221.232	View precise location of 83.187.221.232 on the map!
83.187.221.26	View precise location of 83.187.221.26 on the map!
83.187.221.177	View precise location of 83.187.221.177 on the map!
83.187.221.185	View precise location of 83.187.221.185 on the map!
83.187.221.127	View precise location of 83.187.221.127 on the map!
83.187.221.28	View precise location of 83.187.221.28 on the map!
83.187.221.255	View precise location of 83.187.221.255 on the map!
83.187.221.115	View precise location of 83.187.221.115 on the map!
83.187.221.133	View precise location of 83.187.221.133 on the map!
83.187.221.99	View precise location of 83.187.221.99 on the map!
83.187.221.71	View precise location of 83.187.221.71 on the map!

10 Random IPs

100.30.142.173	Find precise map location of 100.30.142.173
226.51.120.11	Find precise map location of 226.51.120.11
84.171.10.176	Find precise map location of 84.171.10.176
178.114.26.143	Find precise map location of 178.114.26.143
180.175.81.11	Find precise map location of 180.175.81.11
26.46.209.78	Find precise map location of 26.46.209.78
78.242.121.80	Find precise map location of 78.242.121.80
141.81.110.242	Find precise map location of 141.81.110.242
47.20.126.209	Find precise map location of 47.20.126.209
26.55.147.228	Find precise map location of 26.55.147.228
118.185.234.140	Find precise map location of 118.185.234.140

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