57.56.66 is a class C of IPs

Sample IPs from the class C 57.56.66

57.56.66.253	View precise location of 57.56.66.253 on the map!
57.56.66.93	View precise location of 57.56.66.93 on the map!
57.56.66.170	View precise location of 57.56.66.170 on the map!
57.56.66.84	View precise location of 57.56.66.84 on the map!
57.56.66.244	View precise location of 57.56.66.244 on the map!
57.56.66.230	View precise location of 57.56.66.230 on the map!
57.56.66.239	View precise location of 57.56.66.239 on the map!
57.56.66.176	View precise location of 57.56.66.176 on the map!
57.56.66.151	View precise location of 57.56.66.151 on the map!
57.56.66.212	View precise location of 57.56.66.212 on the map!
57.56.66.170	View precise location of 57.56.66.170 on the map!

10 Random IPs

91.151.251.63	Find precise map location of 91.151.251.63
251.233.77.59	Find precise map location of 251.233.77.59
21.29.249.168	Find precise map location of 21.29.249.168
100.13.26.230	Find precise map location of 100.13.26.230
155.130.202.150	Find precise map location of 155.130.202.150
178.170.57.127	Find precise map location of 178.170.57.127
226.109.220.192	Find precise map location of 226.109.220.192
140.93.229.118	Find precise map location of 140.93.229.118
176.240.147.163	Find precise map location of 176.240.147.163
213.99.144.8	Find precise map location of 213.99.144.8
96.176.123.228	Find precise map location of 96.176.123.228

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