51.166.4 is a class C of IPs

Sample IPs from the class C 51.166.4

51.166.4.67	View precise location of 51.166.4.67 on the map!
51.166.4.236	View precise location of 51.166.4.236 on the map!
51.166.4.83	View precise location of 51.166.4.83 on the map!
51.166.4.116	View precise location of 51.166.4.116 on the map!
51.166.4.201	View precise location of 51.166.4.201 on the map!
51.166.4.81	View precise location of 51.166.4.81 on the map!
51.166.4.120	View precise location of 51.166.4.120 on the map!
51.166.4.63	View precise location of 51.166.4.63 on the map!
51.166.4.126	View precise location of 51.166.4.126 on the map!
51.166.4.238	View precise location of 51.166.4.238 on the map!
51.166.4.74	View precise location of 51.166.4.74 on the map!

10 Random IPs

157.48.61.248	Find precise map location of 157.48.61.248
246.166.134.25	Find precise map location of 246.166.134.25
164.148.231.206	Find precise map location of 164.148.231.206
115.169.2.205	Find precise map location of 115.169.2.205
57.149.128.177	Find precise map location of 57.149.128.177
188.63.69.80	Find precise map location of 188.63.69.80
123.138.73.69	Find precise map location of 123.138.73.69
86.83.133.239	Find precise map location of 86.83.133.239
8.87.17.180	Find precise map location of 8.87.17.180
124.176.187.218	Find precise map location of 124.176.187.218
13.150.201.15	Find precise map location of 13.150.201.15

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