6.51.57 is a class C of IPs

Sample IPs from the class C 6.51.57

6.51.57.19	View precise location of 6.51.57.19 on the map!
6.51.57.128	View precise location of 6.51.57.128 on the map!
6.51.57.220	View precise location of 6.51.57.220 on the map!
6.51.57.87	View precise location of 6.51.57.87 on the map!
6.51.57.45	View precise location of 6.51.57.45 on the map!
6.51.57.130	View precise location of 6.51.57.130 on the map!
6.51.57.235	View precise location of 6.51.57.235 on the map!
6.51.57.77	View precise location of 6.51.57.77 on the map!
6.51.57.233	View precise location of 6.51.57.233 on the map!
6.51.57.80	View precise location of 6.51.57.80 on the map!
6.51.57.153	View precise location of 6.51.57.153 on the map!

10 Random IPs

194.134.43.151	Find precise map location of 194.134.43.151
38.20.120.215	Find precise map location of 38.20.120.215
203.80.235.233	Find precise map location of 203.80.235.233
129.113.192.38	Find precise map location of 129.113.192.38
173.226.67.136	Find precise map location of 173.226.67.136
40.170.6.220	Find precise map location of 40.170.6.220
236.176.222.173	Find precise map location of 236.176.222.173
47.21.80.231	Find precise map location of 47.21.80.231
233.76.96.209	Find precise map location of 233.76.96.209
243.8.152.7	Find precise map location of 243.8.152.7
180.89.89.80	Find precise map location of 180.89.89.80

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