172.31.12 is a class C of IPs

Sample IPs from the class C 172.31.12

172.31.12.109	View precise location of 172.31.12.109 on the map!
172.31.12.100	View precise location of 172.31.12.100 on the map!
172.31.12.187	View precise location of 172.31.12.187 on the map!
172.31.12.66	View precise location of 172.31.12.66 on the map!
172.31.12.78	View precise location of 172.31.12.78 on the map!
172.31.12.32	View precise location of 172.31.12.32 on the map!
172.31.12.209	View precise location of 172.31.12.209 on the map!
172.31.12.148	View precise location of 172.31.12.148 on the map!
172.31.12.63	View precise location of 172.31.12.63 on the map!
172.31.12.142	View precise location of 172.31.12.142 on the map!
172.31.12.118	View precise location of 172.31.12.118 on the map!

10 Random IPs

69.138.18.28	Find precise map location of 69.138.18.28
235.210.129.222	Find precise map location of 235.210.129.222
215.241.186.216	Find precise map location of 215.241.186.216
156.192.83.138	Find precise map location of 156.192.83.138
120.213.122.56	Find precise map location of 120.213.122.56
48.75.142.16	Find precise map location of 48.75.142.16
62.165.252.63	Find precise map location of 62.165.252.63
79.109.25.83	Find precise map location of 79.109.25.83
242.185.128.105	Find precise map location of 242.185.128.105
23.62.22.6	Find precise map location of 23.62.22.6
152.55.21.140	Find precise map location of 152.55.21.140

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