157.100.40 is a class C of IPs

Sample IPs from the class C 157.100.40

157.100.40.122	View precise location of 157.100.40.122 on the map!
157.100.40.106	View precise location of 157.100.40.106 on the map!
157.100.40.7	View precise location of 157.100.40.7 on the map!
157.100.40.113	View precise location of 157.100.40.113 on the map!
157.100.40.253	View precise location of 157.100.40.253 on the map!
157.100.40.142	View precise location of 157.100.40.142 on the map!
157.100.40.221	View precise location of 157.100.40.221 on the map!
157.100.40.179	View precise location of 157.100.40.179 on the map!
157.100.40.40	View precise location of 157.100.40.40 on the map!
157.100.40.139	View precise location of 157.100.40.139 on the map!
157.100.40.221	View precise location of 157.100.40.221 on the map!

10 Random IPs

248.202.218.65	Find precise map location of 248.202.218.65
236.154.137.154	Find precise map location of 236.154.137.154
71.88.194.143	Find precise map location of 71.88.194.143
211.105.246.246	Find precise map location of 211.105.246.246
13.201.18.196	Find precise map location of 13.201.18.196
128.186.185.85	Find precise map location of 128.186.185.85
248.230.164.29	Find precise map location of 248.230.164.29
106.238.225.129	Find precise map location of 106.238.225.129
230.241.45.96	Find precise map location of 230.241.45.96
138.123.246.134	Find precise map location of 138.123.246.134
53.196.179.69	Find precise map location of 53.196.179.69

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