139.143.172 is a class C of IPs

Sample IPs from the class C 139.143.172

139.143.172.188	View precise location of 139.143.172.188 on the map!
139.143.172.190	View precise location of 139.143.172.190 on the map!
139.143.172.63	View precise location of 139.143.172.63 on the map!
139.143.172.59	View precise location of 139.143.172.59 on the map!
139.143.172.40	View precise location of 139.143.172.40 on the map!
139.143.172.221	View precise location of 139.143.172.221 on the map!
139.143.172.159	View precise location of 139.143.172.159 on the map!
139.143.172.143	View precise location of 139.143.172.143 on the map!
139.143.172.77	View precise location of 139.143.172.77 on the map!
139.143.172.11	View precise location of 139.143.172.11 on the map!
139.143.172.243	View precise location of 139.143.172.243 on the map!

10 Random IPs

82.84.138.192	Find precise map location of 82.84.138.192
205.8.209.247	Find precise map location of 205.8.209.247
55.205.179.10	Find precise map location of 55.205.179.10
32.250.63.195	Find precise map location of 32.250.63.195
137.69.208.186	Find precise map location of 137.69.208.186
200.99.5.181	Find precise map location of 200.99.5.181
33.55.249.242	Find precise map location of 33.55.249.242
234.227.94.142	Find precise map location of 234.227.94.142
65.255.178.197	Find precise map location of 65.255.178.197
250.247.145.17	Find precise map location of 250.247.145.17
75.216.238.33	Find precise map location of 75.216.238.33

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