56.66.77 is a class C of IPs

Sample IPs from the class C 56.66.77

56.66.77.188	View precise location of 56.66.77.188 on the map!
56.66.77.200	View precise location of 56.66.77.200 on the map!
56.66.77.82	View precise location of 56.66.77.82 on the map!
56.66.77.196	View precise location of 56.66.77.196 on the map!
56.66.77.234	View precise location of 56.66.77.234 on the map!
56.66.77.6	View precise location of 56.66.77.6 on the map!
56.66.77.127	View precise location of 56.66.77.127 on the map!
56.66.77.85	View precise location of 56.66.77.85 on the map!
56.66.77.178	View precise location of 56.66.77.178 on the map!
56.66.77.64	View precise location of 56.66.77.64 on the map!
56.66.77.186	View precise location of 56.66.77.186 on the map!

10 Random IPs

160.120.101.60	Find precise map location of 160.120.101.60
175.65.145.92	Find precise map location of 175.65.145.92
78.27.207.165	Find precise map location of 78.27.207.165
195.209.215.135	Find precise map location of 195.209.215.135
197.31.193.76	Find precise map location of 197.31.193.76
167.16.21.201	Find precise map location of 167.16.21.201
46.136.87.157	Find precise map location of 46.136.87.157
229.210.117.147	Find precise map location of 229.210.117.147
81.65.197.10	Find precise map location of 81.65.197.10
54.195.116.179	Find precise map location of 54.195.116.179
91.203.155.154	Find precise map location of 91.203.155.154

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