139.12.51 is a class C of IPs

Sample IPs from the class C 139.12.51

139.12.51.50	View precise location of 139.12.51.50 on the map!
139.12.51.42	View precise location of 139.12.51.42 on the map!
139.12.51.93	View precise location of 139.12.51.93 on the map!
139.12.51.244	View precise location of 139.12.51.244 on the map!
139.12.51.5	View precise location of 139.12.51.5 on the map!
139.12.51.138	View precise location of 139.12.51.138 on the map!
139.12.51.31	View precise location of 139.12.51.31 on the map!
139.12.51.255	View precise location of 139.12.51.255 on the map!
139.12.51.45	View precise location of 139.12.51.45 on the map!
139.12.51.195	View precise location of 139.12.51.195 on the map!
139.12.51.243	View precise location of 139.12.51.243 on the map!

10 Random IPs

237.205.32.82	Find precise map location of 237.205.32.82
216.245.214.80	Find precise map location of 216.245.214.80
6.167.131.10	Find precise map location of 6.167.131.10
209.197.141.122	Find precise map location of 209.197.141.122
108.87.132.57	Find precise map location of 108.87.132.57
151.224.45.230	Find precise map location of 151.224.45.230
58.179.80.48	Find precise map location of 58.179.80.48
46.202.4.118	Find precise map location of 46.202.4.118
18.90.103.123	Find precise map location of 18.90.103.123
193.132.95.196	Find precise map location of 193.132.95.196
18.51.206.6	Find precise map location of 18.51.206.6

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