137.66 is a class B of IPs

Sample IPs from the class B 137.66

137.66.252.125	View precise location of 137.66.252.125 on the map!
137.66.164.84	View precise location of 137.66.164.84 on the map!
137.66.11.249	View precise location of 137.66.11.249 on the map!
137.66.154.80	View precise location of 137.66.154.80 on the map!
137.66.170.59	View precise location of 137.66.170.59 on the map!
137.66.197.78	View precise location of 137.66.197.78 on the map!
137.66.151.2	View precise location of 137.66.151.2 on the map!
137.66.249.191	View precise location of 137.66.249.191 on the map!
137.66.175.137	View precise location of 137.66.175.137 on the map!
137.66.99.141	View precise location of 137.66.99.141 on the map!
137.66.197.228	View precise location of 137.66.197.228 on the map!

10 Random IPs

164.233.210.202	Find precise map location of 164.233.210.202
86.242.69.191	Find precise map location of 86.242.69.191
175.202.29.90	Find precise map location of 175.202.29.90
96.3.40.101	Find precise map location of 96.3.40.101
57.94.207.54	Find precise map location of 57.94.207.54
122.171.96.55	Find precise map location of 122.171.96.55
77.233.222.244	Find precise map location of 77.233.222.244
195.173.223.222	Find precise map location of 195.173.223.222
62.81.45.195	Find precise map location of 62.81.45.195
163.226.114.90	Find precise map location of 163.226.114.90
83.101.233.94	Find precise map location of 83.101.233.94

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