138.4.143 is a class C of IPs

Sample IPs from the class C 138.4.143

138.4.143.178	View precise location of 138.4.143.178 on the map!
138.4.143.17	View precise location of 138.4.143.17 on the map!
138.4.143.227	View precise location of 138.4.143.227 on the map!
138.4.143.176	View precise location of 138.4.143.176 on the map!
138.4.143.237	View precise location of 138.4.143.237 on the map!
138.4.143.154	View precise location of 138.4.143.154 on the map!
138.4.143.187	View precise location of 138.4.143.187 on the map!
138.4.143.201	View precise location of 138.4.143.201 on the map!
138.4.143.198	View precise location of 138.4.143.198 on the map!
138.4.143.146	View precise location of 138.4.143.146 on the map!
138.4.143.171	View precise location of 138.4.143.171 on the map!

10 Random IPs

202.185.35.240	Find precise map location of 202.185.35.240
122.90.60.216	Find precise map location of 122.90.60.216
189.135.250.64	Find precise map location of 189.135.250.64
53.234.244.33	Find precise map location of 53.234.244.33
223.87.171.169	Find precise map location of 223.87.171.169
244.42.237.134	Find precise map location of 244.42.237.134
227.231.39.188	Find precise map location of 227.231.39.188
197.65.161.164	Find precise map location of 197.65.161.164
180.121.145.196	Find precise map location of 180.121.145.196
48.208.29.21	Find precise map location of 48.208.29.21
27.171.172.234	Find precise map location of 27.171.172.234

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