57.40.77 is a class C of IPs

Sample IPs from the class C 57.40.77

57.40.77.37	View precise location of 57.40.77.37 on the map!
57.40.77.83	View precise location of 57.40.77.83 on the map!
57.40.77.192	View precise location of 57.40.77.192 on the map!
57.40.77.39	View precise location of 57.40.77.39 on the map!
57.40.77.171	View precise location of 57.40.77.171 on the map!
57.40.77.189	View precise location of 57.40.77.189 on the map!
57.40.77.12	View precise location of 57.40.77.12 on the map!
57.40.77.96	View precise location of 57.40.77.96 on the map!
57.40.77.160	View precise location of 57.40.77.160 on the map!
57.40.77.99	View precise location of 57.40.77.99 on the map!
57.40.77.169	View precise location of 57.40.77.169 on the map!

10 Random IPs

104.144.172.226	Find precise map location of 104.144.172.226
134.31.112.139	Find precise map location of 134.31.112.139
77.19.195.123	Find precise map location of 77.19.195.123
34.208.92.253	Find precise map location of 34.208.92.253
183.144.17.157	Find precise map location of 183.144.17.157
48.127.198.220	Find precise map location of 48.127.198.220
42.137.64.182	Find precise map location of 42.137.64.182
162.172.68.222	Find precise map location of 162.172.68.222
191.21.177.34	Find precise map location of 191.21.177.34
14.120.89.216	Find precise map location of 14.120.89.216
197.129.142.200	Find precise map location of 197.129.142.200

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