139.66.249 is a class C of IPs

Sample IPs from the class C 139.66.249

139.66.249.79	View precise location of 139.66.249.79 on the map!
139.66.249.51	View precise location of 139.66.249.51 on the map!
139.66.249.151	View precise location of 139.66.249.151 on the map!
139.66.249.69	View precise location of 139.66.249.69 on the map!
139.66.249.201	View precise location of 139.66.249.201 on the map!
139.66.249.145	View precise location of 139.66.249.145 on the map!
139.66.249.195	View precise location of 139.66.249.195 on the map!
139.66.249.158	View precise location of 139.66.249.158 on the map!
139.66.249.191	View precise location of 139.66.249.191 on the map!
139.66.249.99	View precise location of 139.66.249.99 on the map!
139.66.249.154	View precise location of 139.66.249.154 on the map!

10 Random IPs

47.105.16.243	Find precise map location of 47.105.16.243
139.1.93.106	Find precise map location of 139.1.93.106
28.78.165.72	Find precise map location of 28.78.165.72
223.153.247.187	Find precise map location of 223.153.247.187
130.224.94.109	Find precise map location of 130.224.94.109
96.221.15.135	Find precise map location of 96.221.15.135
193.180.133.52	Find precise map location of 193.180.133.52
105.52.171.160	Find precise map location of 105.52.171.160
89.100.61.253	Find precise map location of 89.100.61.253
99.188.82.188	Find precise map location of 99.188.82.188
72.244.80.144	Find precise map location of 72.244.80.144

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