128.51.3 is a class C of IPs

Sample IPs from the class C 128.51.3

128.51.3.156	View precise location of 128.51.3.156 on the map!
128.51.3.170	View precise location of 128.51.3.170 on the map!
128.51.3.165	View precise location of 128.51.3.165 on the map!
128.51.3.19	View precise location of 128.51.3.19 on the map!
128.51.3.191	View precise location of 128.51.3.191 on the map!
128.51.3.124	View precise location of 128.51.3.124 on the map!
128.51.3.237	View precise location of 128.51.3.237 on the map!
128.51.3.94	View precise location of 128.51.3.94 on the map!
128.51.3.29	View precise location of 128.51.3.29 on the map!
128.51.3.202	View precise location of 128.51.3.202 on the map!
128.51.3.39	View precise location of 128.51.3.39 on the map!

10 Random IPs

69.121.136.78	Find precise map location of 69.121.136.78
155.210.254.252	Find precise map location of 155.210.254.252
172.124.231.233	Find precise map location of 172.124.231.233
129.134.170.145	Find precise map location of 129.134.170.145
96.162.90.233	Find precise map location of 96.162.90.233
202.40.172.213	Find precise map location of 202.40.172.213
86.139.18.246	Find precise map location of 86.139.18.246
36.147.95.184	Find precise map location of 36.147.95.184
107.76.12.43	Find precise map location of 107.76.12.43
251.107.155.99	Find precise map location of 251.107.155.99
110.7.191.81	Find precise map location of 110.7.191.81

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