204.37.57 is a class C of IPs

Sample IPs from the class C 204.37.57

204.37.57.195	View precise location of 204.37.57.195 on the map!
204.37.57.79	View precise location of 204.37.57.79 on the map!
204.37.57.75	View precise location of 204.37.57.75 on the map!
204.37.57.140	View precise location of 204.37.57.140 on the map!
204.37.57.82	View precise location of 204.37.57.82 on the map!
204.37.57.96	View precise location of 204.37.57.96 on the map!
204.37.57.13	View precise location of 204.37.57.13 on the map!
204.37.57.142	View precise location of 204.37.57.142 on the map!
204.37.57.163	View precise location of 204.37.57.163 on the map!
204.37.57.93	View precise location of 204.37.57.93 on the map!
204.37.57.20	View precise location of 204.37.57.20 on the map!

10 Random IPs

130.78.192.142	Find precise map location of 130.78.192.142
51.251.207.34	Find precise map location of 51.251.207.34
161.43.81.175	Find precise map location of 161.43.81.175
129.160.229.10	Find precise map location of 129.160.229.10
248.135.149.170	Find precise map location of 248.135.149.170
206.103.229.120	Find precise map location of 206.103.229.120
207.10.219.39	Find precise map location of 207.10.219.39
196.253.204.43	Find precise map location of 196.253.204.43
70.206.10.131	Find precise map location of 70.206.10.131
25.9.162.1	Find precise map location of 25.9.162.1
122.18.97.118	Find precise map location of 122.18.97.118

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