51.65 is a class B of IPs

Sample IPs from the class B 51.65

51.65.151.252	View precise location of 51.65.151.252 on the map!
51.65.5.53	View precise location of 51.65.5.53 on the map!
51.65.159.47	View precise location of 51.65.159.47 on the map!
51.65.13.78	View precise location of 51.65.13.78 on the map!
51.65.48.12	View precise location of 51.65.48.12 on the map!
51.65.56.216	View precise location of 51.65.56.216 on the map!
51.65.91.91	View precise location of 51.65.91.91 on the map!
51.65.72.220	View precise location of 51.65.72.220 on the map!
51.65.228.112	View precise location of 51.65.228.112 on the map!
51.65.100.159	View precise location of 51.65.100.159 on the map!
51.65.118.177	View precise location of 51.65.118.177 on the map!

10 Random IPs

136.25.49.166	Find precise map location of 136.25.49.166
207.232.230.124	Find precise map location of 207.232.230.124
162.123.30.231	Find precise map location of 162.123.30.231
251.60.187.205	Find precise map location of 251.60.187.205
178.72.21.97	Find precise map location of 178.72.21.97
168.152.85.113	Find precise map location of 168.152.85.113
43.33.20.111	Find precise map location of 43.33.20.111
68.249.123.75	Find precise map location of 68.249.123.75
225.19.82.75	Find precise map location of 225.19.82.75
77.125.225.32	Find precise map location of 77.125.225.32
128.79.155.198	Find precise map location of 128.79.155.198

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