156.172.39 is a class C of IPs

Sample IPs from the class C 156.172.39

156.172.39.219	View precise location of 156.172.39.219 on the map!
156.172.39.233	View precise location of 156.172.39.233 on the map!
156.172.39.25	View precise location of 156.172.39.25 on the map!
156.172.39.123	View precise location of 156.172.39.123 on the map!
156.172.39.90	View precise location of 156.172.39.90 on the map!
156.172.39.245	View precise location of 156.172.39.245 on the map!
156.172.39.135	View precise location of 156.172.39.135 on the map!
156.172.39.229	View precise location of 156.172.39.229 on the map!
156.172.39.189	View precise location of 156.172.39.189 on the map!
156.172.39.232	View precise location of 156.172.39.232 on the map!
156.172.39.15	View precise location of 156.172.39.15 on the map!

10 Random IPs

255.83.209.82	Find precise map location of 255.83.209.82
43.163.137.63	Find precise map location of 43.163.137.63
109.116.137.89	Find precise map location of 109.116.137.89
128.60.244.59	Find precise map location of 128.60.244.59
210.85.62.136	Find precise map location of 210.85.62.136
54.6.83.42	Find precise map location of 54.6.83.42
143.207.66.13	Find precise map location of 143.207.66.13
157.138.172.67	Find precise map location of 157.138.172.67
134.99.164.78	Find precise map location of 134.99.164.78
131.245.20.97	Find precise map location of 131.245.20.97
68.112.135.183	Find precise map location of 68.112.135.183

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