3.172.187 is a class C of IPs

Sample IPs from the class C 3.172.187

3.172.187.3	View precise location of 3.172.187.3 on the map!
3.172.187.93	View precise location of 3.172.187.93 on the map!
3.172.187.121	View precise location of 3.172.187.121 on the map!
3.172.187.65	View precise location of 3.172.187.65 on the map!
3.172.187.72	View precise location of 3.172.187.72 on the map!
3.172.187.202	View precise location of 3.172.187.202 on the map!
3.172.187.240	View precise location of 3.172.187.240 on the map!
3.172.187.137	View precise location of 3.172.187.137 on the map!
3.172.187.53	View precise location of 3.172.187.53 on the map!
3.172.187.138	View precise location of 3.172.187.138 on the map!
3.172.187.152	View precise location of 3.172.187.152 on the map!

10 Random IPs

81.140.234.244	Find precise map location of 81.140.234.244
214.46.39.60	Find precise map location of 214.46.39.60
21.220.9.254	Find precise map location of 21.220.9.254
231.4.169.91	Find precise map location of 231.4.169.91
136.130.163.198	Find precise map location of 136.130.163.198
74.161.3.80	Find precise map location of 74.161.3.80
13.181.89.130	Find precise map location of 13.181.89.130
246.127.119.59	Find precise map location of 246.127.119.59
104.235.189.230	Find precise map location of 104.235.189.230
203.250.240.173	Find precise map location of 203.250.240.173
161.83.57.68	Find precise map location of 161.83.57.68

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