81.165.52 is a class C of IPs

Sample IPs from the class C 81.165.52

81.165.52.113	View precise location of 81.165.52.113 on the map!
81.165.52.252	View precise location of 81.165.52.252 on the map!
81.165.52.148	View precise location of 81.165.52.148 on the map!
81.165.52.139	View precise location of 81.165.52.139 on the map!
81.165.52.222	View precise location of 81.165.52.222 on the map!
81.165.52.127	View precise location of 81.165.52.127 on the map!
81.165.52.163	View precise location of 81.165.52.163 on the map!
81.165.52.140	View precise location of 81.165.52.140 on the map!
81.165.52.188	View precise location of 81.165.52.188 on the map!
81.165.52.223	View precise location of 81.165.52.223 on the map!
81.165.52.126	View precise location of 81.165.52.126 on the map!

10 Random IPs

60.150.195.94	Find precise map location of 60.150.195.94
221.227.181.215	Find precise map location of 221.227.181.215
10.175.46.72	Find precise map location of 10.175.46.72
149.149.172.203	Find precise map location of 149.149.172.203
188.219.108.24	Find precise map location of 188.219.108.24
81.235.10.236	Find precise map location of 81.235.10.236
208.120.219.113	Find precise map location of 208.120.219.113
2.9.198.224	Find precise map location of 2.9.198.224
212.200.123.255	Find precise map location of 212.200.123.255
33.156.101.139	Find precise map location of 33.156.101.139
176.170.38.222	Find precise map location of 176.170.38.222

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