31.66.39 is a class C of IPs

Sample IPs from the class C 31.66.39

31.66.39.126	View precise location of 31.66.39.126 on the map!
31.66.39.232	View precise location of 31.66.39.232 on the map!
31.66.39.240	View precise location of 31.66.39.240 on the map!
31.66.39.54	View precise location of 31.66.39.54 on the map!
31.66.39.249	View precise location of 31.66.39.249 on the map!
31.66.39.234	View precise location of 31.66.39.234 on the map!
31.66.39.89	View precise location of 31.66.39.89 on the map!
31.66.39.96	View precise location of 31.66.39.96 on the map!
31.66.39.1	View precise location of 31.66.39.1 on the map!
31.66.39.211	View precise location of 31.66.39.211 on the map!
31.66.39.202	View precise location of 31.66.39.202 on the map!

10 Random IPs

65.239.152.37	Find precise map location of 65.239.152.37
156.37.40.94	Find precise map location of 156.37.40.94
206.167.92.122	Find precise map location of 206.167.92.122
60.36.117.212	Find precise map location of 60.36.117.212
184.74.231.12	Find precise map location of 184.74.231.12
62.1.67.109	Find precise map location of 62.1.67.109
195.15.221.12	Find precise map location of 195.15.221.12
254.59.33.151	Find precise map location of 254.59.33.151
248.60.197.190	Find precise map location of 248.60.197.190
17.67.65.140	Find precise map location of 17.67.65.140
54.81.38.99	Find precise map location of 54.81.38.99

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