191.161.57 is a class C of IPs

Sample IPs from the class C 191.161.57

191.161.57.116	View precise location of 191.161.57.116 on the map!
191.161.57.173	View precise location of 191.161.57.173 on the map!
191.161.57.98	View precise location of 191.161.57.98 on the map!
191.161.57.63	View precise location of 191.161.57.63 on the map!
191.161.57.142	View precise location of 191.161.57.142 on the map!
191.161.57.166	View precise location of 191.161.57.166 on the map!
191.161.57.149	View precise location of 191.161.57.149 on the map!
191.161.57.48	View precise location of 191.161.57.48 on the map!
191.161.57.227	View precise location of 191.161.57.227 on the map!
191.161.57.10	View precise location of 191.161.57.10 on the map!
191.161.57.84	View precise location of 191.161.57.84 on the map!

10 Random IPs

137.138.183.86	Find precise map location of 137.138.183.86
39.148.94.22	Find precise map location of 39.148.94.22
105.185.183.155	Find precise map location of 105.185.183.155
16.202.67.109	Find precise map location of 16.202.67.109
254.17.200.250	Find precise map location of 254.17.200.250
176.164.98.81	Find precise map location of 176.164.98.81
225.75.114.139	Find precise map location of 225.75.114.139
246.228.174.11	Find precise map location of 246.228.174.11
235.62.15.232	Find precise map location of 235.62.15.232
222.73.21.183	Find precise map location of 222.73.21.183
173.234.176.57	Find precise map location of 173.234.176.57

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