66.72.157 is a class C of IPs

Sample IPs from the class C 66.72.157

66.72.157.132	View precise location of 66.72.157.132 on the map!
66.72.157.80	View precise location of 66.72.157.80 on the map!
66.72.157.175	View precise location of 66.72.157.175 on the map!
66.72.157.204	View precise location of 66.72.157.204 on the map!
66.72.157.176	View precise location of 66.72.157.176 on the map!
66.72.157.72	View precise location of 66.72.157.72 on the map!
66.72.157.174	View precise location of 66.72.157.174 on the map!
66.72.157.8	View precise location of 66.72.157.8 on the map!
66.72.157.7	View precise location of 66.72.157.7 on the map!
66.72.157.144	View precise location of 66.72.157.144 on the map!
66.72.157.93	View precise location of 66.72.157.93 on the map!

10 Random IPs

73.191.148.109	Find precise map location of 73.191.148.109
230.184.200.27	Find precise map location of 230.184.200.27
52.71.157.84	Find precise map location of 52.71.157.84
236.63.122.13	Find precise map location of 236.63.122.13
186.71.152.47	Find precise map location of 186.71.152.47
118.234.229.182	Find precise map location of 118.234.229.182
120.141.241.250	Find precise map location of 120.141.241.250
90.163.55.129	Find precise map location of 90.163.55.129
250.92.219.6	Find precise map location of 250.92.219.6
137.109.136.72	Find precise map location of 137.109.136.72
59.87.23.154	Find precise map location of 59.87.23.154

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