131.138.10 is a class C of IPs

Sample IPs from the class C 131.138.10

131.138.10.104	View precise location of 131.138.10.104 on the map!
131.138.10.173	View precise location of 131.138.10.173 on the map!
131.138.10.137	View precise location of 131.138.10.137 on the map!
131.138.10.40	View precise location of 131.138.10.40 on the map!
131.138.10.15	View precise location of 131.138.10.15 on the map!
131.138.10.109	View precise location of 131.138.10.109 on the map!
131.138.10.56	View precise location of 131.138.10.56 on the map!
131.138.10.77	View precise location of 131.138.10.77 on the map!
131.138.10.160	View precise location of 131.138.10.160 on the map!
131.138.10.250	View precise location of 131.138.10.250 on the map!
131.138.10.196	View precise location of 131.138.10.196 on the map!

10 Random IPs

190.64.153.67	Find precise map location of 190.64.153.67
103.249.8.209	Find precise map location of 103.249.8.209
103.1.227.29	Find precise map location of 103.1.227.29
28.22.104.72	Find precise map location of 28.22.104.72
71.58.74.6	Find precise map location of 71.58.74.6
116.49.151.86	Find precise map location of 116.49.151.86
96.86.60.36	Find precise map location of 96.86.60.36
149.169.42.224	Find precise map location of 149.169.42.224
193.158.136.50	Find precise map location of 193.158.136.50
10.109.199.201	Find precise map location of 10.109.199.201
75.26.232.205	Find precise map location of 75.26.232.205

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