255.71.72 is a class C of IPs

Sample IPs from the class C 255.71.72

255.71.72.4	View precise location of 255.71.72.4 on the map!
255.71.72.82	View precise location of 255.71.72.82 on the map!
255.71.72.8	View precise location of 255.71.72.8 on the map!
255.71.72.207	View precise location of 255.71.72.207 on the map!
255.71.72.72	View precise location of 255.71.72.72 on the map!
255.71.72.100	View precise location of 255.71.72.100 on the map!
255.71.72.12	View precise location of 255.71.72.12 on the map!
255.71.72.249	View precise location of 255.71.72.249 on the map!
255.71.72.83	View precise location of 255.71.72.83 on the map!
255.71.72.90	View precise location of 255.71.72.90 on the map!
255.71.72.60	View precise location of 255.71.72.60 on the map!

10 Random IPs

69.229.16.199	Find precise map location of 69.229.16.199
226.37.185.180	Find precise map location of 226.37.185.180
66.117.236.156	Find precise map location of 66.117.236.156
37.145.32.187	Find precise map location of 37.145.32.187
63.178.249.2	Find precise map location of 63.178.249.2
157.138.132.206	Find precise map location of 157.138.132.206
130.94.95.185	Find precise map location of 130.94.95.185
116.60.201.97	Find precise map location of 116.60.201.97
113.67.234.249	Find precise map location of 113.67.234.249
39.247.233.155	Find precise map location of 39.247.233.155
53.252.127.151	Find precise map location of 53.252.127.151

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