172.172.131 is a class C of IPs

Sample IPs from the class C 172.172.131

172.172.131.46	View precise location of 172.172.131.46 on the map!
172.172.131.31	View precise location of 172.172.131.31 on the map!
172.172.131.2	View precise location of 172.172.131.2 on the map!
172.172.131.228	View precise location of 172.172.131.228 on the map!
172.172.131.133	View precise location of 172.172.131.133 on the map!
172.172.131.48	View precise location of 172.172.131.48 on the map!
172.172.131.7	View precise location of 172.172.131.7 on the map!
172.172.131.236	View precise location of 172.172.131.236 on the map!
172.172.131.218	View precise location of 172.172.131.218 on the map!
172.172.131.187	View precise location of 172.172.131.187 on the map!
172.172.131.142	View precise location of 172.172.131.142 on the map!

10 Random IPs

53.73.147.55	Find precise map location of 53.73.147.55
180.224.12.43	Find precise map location of 180.224.12.43
178.207.186.87	Find precise map location of 178.207.186.87
64.179.184.158	Find precise map location of 64.179.184.158
235.130.225.126	Find precise map location of 235.130.225.126
175.31.106.198	Find precise map location of 175.31.106.198
20.18.195.208	Find precise map location of 20.18.195.208
121.142.94.24	Find precise map location of 121.142.94.24
241.100.42.80	Find precise map location of 241.100.42.80
147.171.72.35	Find precise map location of 147.171.72.35
196.178.145.61	Find precise map location of 196.178.145.61

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