166.39.28 is a class C of IPs

Sample IPs from the class C 166.39.28

166.39.28.155	View precise location of 166.39.28.155 on the map!
166.39.28.161	View precise location of 166.39.28.161 on the map!
166.39.28.16	View precise location of 166.39.28.16 on the map!
166.39.28.229	View precise location of 166.39.28.229 on the map!
166.39.28.81	View precise location of 166.39.28.81 on the map!
166.39.28.153	View precise location of 166.39.28.153 on the map!
166.39.28.25	View precise location of 166.39.28.25 on the map!
166.39.28.154	View precise location of 166.39.28.154 on the map!
166.39.28.166	View precise location of 166.39.28.166 on the map!
166.39.28.238	View precise location of 166.39.28.238 on the map!
166.39.28.20	View precise location of 166.39.28.20 on the map!

10 Random IPs

229.79.187.168	Find precise map location of 229.79.187.168
116.195.88.88	Find precise map location of 116.195.88.88
237.17.243.251	Find precise map location of 237.17.243.251
172.38.129.147	Find precise map location of 172.38.129.147
39.251.128.247	Find precise map location of 39.251.128.247
183.120.212.49	Find precise map location of 183.120.212.49
47.173.14.103	Find precise map location of 47.173.14.103
128.104.88.183	Find precise map location of 128.104.88.183
197.117.132.35	Find precise map location of 197.117.132.35
91.239.165.16	Find precise map location of 91.239.165.16
92.252.63.166	Find precise map location of 92.252.63.166

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