143.129.137 is a class C of IPs

Sample IPs from the class C 143.129.137

143.129.137.89	View precise location of 143.129.137.89 on the map!
143.129.137.228	View precise location of 143.129.137.228 on the map!
143.129.137.238	View precise location of 143.129.137.238 on the map!
143.129.137.64	View precise location of 143.129.137.64 on the map!
143.129.137.65	View precise location of 143.129.137.65 on the map!
143.129.137.225	View precise location of 143.129.137.225 on the map!
143.129.137.87	View precise location of 143.129.137.87 on the map!
143.129.137.99	View precise location of 143.129.137.99 on the map!
143.129.137.20	View precise location of 143.129.137.20 on the map!
143.129.137.223	View precise location of 143.129.137.223 on the map!
143.129.137.74	View precise location of 143.129.137.74 on the map!

10 Random IPs

150.151.235.143	Find precise map location of 150.151.235.143
33.18.32.119	Find precise map location of 33.18.32.119
123.242.180.167	Find precise map location of 123.242.180.167
34.80.73.166	Find precise map location of 34.80.73.166
144.24.100.181	Find precise map location of 144.24.100.181
147.152.53.37	Find precise map location of 147.152.53.37
235.194.193.204	Find precise map location of 235.194.193.204
67.184.255.108	Find precise map location of 67.184.255.108
46.196.75.5	Find precise map location of 46.196.75.5
61.70.105.129	Find precise map location of 61.70.105.129
80.12.200.245	Find precise map location of 80.12.200.245

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