143.157.42 is a class C of IPs

Sample IPs from the class C 143.157.42

143.157.42.32	View precise location of 143.157.42.32 on the map!
143.157.42.251	View precise location of 143.157.42.251 on the map!
143.157.42.119	View precise location of 143.157.42.119 on the map!
143.157.42.193	View precise location of 143.157.42.193 on the map!
143.157.42.9	View precise location of 143.157.42.9 on the map!
143.157.42.147	View precise location of 143.157.42.147 on the map!
143.157.42.49	View precise location of 143.157.42.49 on the map!
143.157.42.67	View precise location of 143.157.42.67 on the map!
143.157.42.6	View precise location of 143.157.42.6 on the map!
143.157.42.234	View precise location of 143.157.42.234 on the map!
143.157.42.115	View precise location of 143.157.42.115 on the map!

10 Random IPs

63.182.242.43	Find precise map location of 63.182.242.43
210.189.94.112	Find precise map location of 210.189.94.112
11.115.53.131	Find precise map location of 11.115.53.131
204.196.224.196	Find precise map location of 204.196.224.196
74.171.100.158	Find precise map location of 74.171.100.158
137.91.235.143	Find precise map location of 137.91.235.143
122.116.162.250	Find precise map location of 122.116.162.250
199.228.61.209	Find precise map location of 199.228.61.209
93.122.130.99	Find precise map location of 93.122.130.99
148.167.130.161	Find precise map location of 148.167.130.161
130.136.109.151	Find precise map location of 130.136.109.151

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