83.39.21 is a class C of IPs

Sample IPs from the class C 83.39.21

83.39.21.209	View precise location of 83.39.21.209 on the map!
83.39.21.158	View precise location of 83.39.21.158 on the map!
83.39.21.144	View precise location of 83.39.21.144 on the map!
83.39.21.76	View precise location of 83.39.21.76 on the map!
83.39.21.125	View precise location of 83.39.21.125 on the map!
83.39.21.43	View precise location of 83.39.21.43 on the map!
83.39.21.58	View precise location of 83.39.21.58 on the map!
83.39.21.69	View precise location of 83.39.21.69 on the map!
83.39.21.235	View precise location of 83.39.21.235 on the map!
83.39.21.204	View precise location of 83.39.21.204 on the map!
83.39.21.240	View precise location of 83.39.21.240 on the map!

10 Random IPs

151.52.216.174	Find precise map location of 151.52.216.174
214.253.140.237	Find precise map location of 214.253.140.237
126.127.211.20	Find precise map location of 126.127.211.20
251.45.242.21	Find precise map location of 251.45.242.21
212.113.34.8	Find precise map location of 212.113.34.8
68.2.8.109	Find precise map location of 68.2.8.109
80.237.237.118	Find precise map location of 80.237.237.118
183.67.113.62	Find precise map location of 183.67.113.62
180.46.95.253	Find precise map location of 180.46.95.253
157.180.157.169	Find precise map location of 157.180.157.169
249.94.206.217	Find precise map location of 249.94.206.217

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