138.57.107 is a class C of IPs

Sample IPs from the class C 138.57.107

138.57.107.56	View precise location of 138.57.107.56 on the map!
138.57.107.148	View precise location of 138.57.107.148 on the map!
138.57.107.229	View precise location of 138.57.107.229 on the map!
138.57.107.138	View precise location of 138.57.107.138 on the map!
138.57.107.57	View precise location of 138.57.107.57 on the map!
138.57.107.45	View precise location of 138.57.107.45 on the map!
138.57.107.38	View precise location of 138.57.107.38 on the map!
138.57.107.248	View precise location of 138.57.107.248 on the map!
138.57.107.67	View precise location of 138.57.107.67 on the map!
138.57.107.166	View precise location of 138.57.107.166 on the map!
138.57.107.31	View precise location of 138.57.107.31 on the map!

10 Random IPs

167.240.176.194	Find precise map location of 167.240.176.194
166.198.250.147	Find precise map location of 166.198.250.147
144.22.102.64	Find precise map location of 144.22.102.64
111.184.206.85	Find precise map location of 111.184.206.85
230.164.21.164	Find precise map location of 230.164.21.164
248.89.202.236	Find precise map location of 248.89.202.236
99.46.102.22	Find precise map location of 99.46.102.22
209.215.98.211	Find precise map location of 209.215.98.211
129.10.158.176	Find precise map location of 129.10.158.176
228.83.73.14	Find precise map location of 228.83.73.14
11.99.59.187	Find precise map location of 11.99.59.187

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