57.56.31 is a class C of IPs

Sample IPs from the class C 57.56.31

57.56.31.28	View precise location of 57.56.31.28 on the map!
57.56.31.118	View precise location of 57.56.31.118 on the map!
57.56.31.210	View precise location of 57.56.31.210 on the map!
57.56.31.76	View precise location of 57.56.31.76 on the map!
57.56.31.24	View precise location of 57.56.31.24 on the map!
57.56.31.207	View precise location of 57.56.31.207 on the map!
57.56.31.217	View precise location of 57.56.31.217 on the map!
57.56.31.5	View precise location of 57.56.31.5 on the map!
57.56.31.103	View precise location of 57.56.31.103 on the map!
57.56.31.18	View precise location of 57.56.31.18 on the map!
57.56.31.244	View precise location of 57.56.31.244 on the map!

10 Random IPs

129.219.122.181	Find precise map location of 129.219.122.181
81.78.233.224	Find precise map location of 81.78.233.224
144.188.61.56	Find precise map location of 144.188.61.56
130.4.236.102	Find precise map location of 130.4.236.102
119.241.246.68	Find precise map location of 119.241.246.68
193.20.184.152	Find precise map location of 193.20.184.152
139.231.5.39	Find precise map location of 139.231.5.39
163.185.108.198	Find precise map location of 163.185.108.198
191.49.206.89	Find precise map location of 191.49.206.89
254.109.35.219	Find precise map location of 254.109.35.219
212.184.153.163	Find precise map location of 212.184.153.163

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