139.208.66 is a class C of IPs

Sample IPs from the class C 139.208.66

139.208.66.213	View precise location of 139.208.66.213 on the map!
139.208.66.248	View precise location of 139.208.66.248 on the map!
139.208.66.162	View precise location of 139.208.66.162 on the map!
139.208.66.2	View precise location of 139.208.66.2 on the map!
139.208.66.13	View precise location of 139.208.66.13 on the map!
139.208.66.158	View precise location of 139.208.66.158 on the map!
139.208.66.225	View precise location of 139.208.66.225 on the map!
139.208.66.246	View precise location of 139.208.66.246 on the map!
139.208.66.248	View precise location of 139.208.66.248 on the map!
139.208.66.214	View precise location of 139.208.66.214 on the map!
139.208.66.221	View precise location of 139.208.66.221 on the map!

10 Random IPs

120.58.25.246	Find precise map location of 120.58.25.246
249.103.61.197	Find precise map location of 249.103.61.197
101.42.165.136	Find precise map location of 101.42.165.136
59.28.67.223	Find precise map location of 59.28.67.223
228.98.119.209	Find precise map location of 228.98.119.209
208.211.18.76	Find precise map location of 208.211.18.76
174.217.15.43	Find precise map location of 174.217.15.43
31.165.85.232	Find precise map location of 31.165.85.232
97.196.41.185	Find precise map location of 97.196.41.185
223.141.214.185	Find precise map location of 223.141.214.185
178.40.196.211	Find precise map location of 178.40.196.211

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