158.131.4 is a class C of IPs

Sample IPs from the class C 158.131.4

158.131.4.217	View precise location of 158.131.4.217 on the map!
158.131.4.11	View precise location of 158.131.4.11 on the map!
158.131.4.71	View precise location of 158.131.4.71 on the map!
158.131.4.81	View precise location of 158.131.4.81 on the map!
158.131.4.163	View precise location of 158.131.4.163 on the map!
158.131.4.58	View precise location of 158.131.4.58 on the map!
158.131.4.90	View precise location of 158.131.4.90 on the map!
158.131.4.42	View precise location of 158.131.4.42 on the map!
158.131.4.196	View precise location of 158.131.4.196 on the map!
158.131.4.152	View precise location of 158.131.4.152 on the map!
158.131.4.53	View precise location of 158.131.4.53 on the map!

10 Random IPs

252.3.139.55	Find precise map location of 252.3.139.55
176.41.31.75	Find precise map location of 176.41.31.75
241.189.191.203	Find precise map location of 241.189.191.203
176.171.251.33	Find precise map location of 176.171.251.33
55.48.51.40	Find precise map location of 55.48.51.40
166.236.94.107	Find precise map location of 166.236.94.107
118.74.111.91	Find precise map location of 118.74.111.91
163.22.203.161	Find precise map location of 163.22.203.161
16.31.182.139	Find precise map location of 16.31.182.139
24.17.110.196	Find precise map location of 24.17.110.196
86.31.150.111	Find precise map location of 86.31.150.111

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