81.16.39 is a class C of IPs

Sample IPs from the class C 81.16.39

81.16.39.148	View precise location of 81.16.39.148 on the map!
81.16.39.186	View precise location of 81.16.39.186 on the map!
81.16.39.229	View precise location of 81.16.39.229 on the map!
81.16.39.163	View precise location of 81.16.39.163 on the map!
81.16.39.191	View precise location of 81.16.39.191 on the map!
81.16.39.162	View precise location of 81.16.39.162 on the map!
81.16.39.184	View precise location of 81.16.39.184 on the map!
81.16.39.233	View precise location of 81.16.39.233 on the map!
81.16.39.145	View precise location of 81.16.39.145 on the map!
81.16.39.35	View precise location of 81.16.39.35 on the map!
81.16.39.128	View precise location of 81.16.39.128 on the map!

10 Random IPs

249.85.202.202	Find precise map location of 249.85.202.202
128.91.59.248	Find precise map location of 128.91.59.248
9.149.207.154	Find precise map location of 9.149.207.154
29.196.213.112	Find precise map location of 29.196.213.112
218.35.203.142	Find precise map location of 218.35.203.142
31.150.217.95	Find precise map location of 31.150.217.95
76.29.62.183	Find precise map location of 76.29.62.183
108.252.71.218	Find precise map location of 108.252.71.218
186.81.75.102	Find precise map location of 186.81.75.102
72.3.184.58	Find precise map location of 72.3.184.58
244.221.68.190	Find precise map location of 244.221.68.190

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