206.143.137 is a class C of IPs

Sample IPs from the class C 206.143.137

206.143.137.157	View precise location of 206.143.137.157 on the map!
206.143.137.179	View precise location of 206.143.137.179 on the map!
206.143.137.178	View precise location of 206.143.137.178 on the map!
206.143.137.176	View precise location of 206.143.137.176 on the map!
206.143.137.246	View precise location of 206.143.137.246 on the map!
206.143.137.139	View precise location of 206.143.137.139 on the map!
206.143.137.124	View precise location of 206.143.137.124 on the map!
206.143.137.158	View precise location of 206.143.137.158 on the map!
206.143.137.69	View precise location of 206.143.137.69 on the map!
206.143.137.192	View precise location of 206.143.137.192 on the map!
206.143.137.156	View precise location of 206.143.137.156 on the map!

10 Random IPs

180.92.101.51	Find precise map location of 180.92.101.51
62.142.190.197	Find precise map location of 62.142.190.197
153.129.227.109	Find precise map location of 153.129.227.109
173.26.174.55	Find precise map location of 173.26.174.55
174.254.33.251	Find precise map location of 174.254.33.251
245.72.44.31	Find precise map location of 245.72.44.31
123.251.238.73	Find precise map location of 123.251.238.73
212.22.139.162	Find precise map location of 212.22.139.162
131.178.71.166	Find precise map location of 131.178.71.166
211.238.222.117	Find precise map location of 211.238.222.117
107.163.226.124	Find precise map location of 107.163.226.124

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