81.171.199 is a class C of IPs

Sample IPs from the class C 81.171.199

81.171.199.105	View precise location of 81.171.199.105 on the map!
81.171.199.237	View precise location of 81.171.199.237 on the map!
81.171.199.198	View precise location of 81.171.199.198 on the map!
81.171.199.216	View precise location of 81.171.199.216 on the map!
81.171.199.121	View precise location of 81.171.199.121 on the map!
81.171.199.39	View precise location of 81.171.199.39 on the map!
81.171.199.184	View precise location of 81.171.199.184 on the map!
81.171.199.112	View precise location of 81.171.199.112 on the map!
81.171.199.211	View precise location of 81.171.199.211 on the map!
81.171.199.209	View precise location of 81.171.199.209 on the map!
81.171.199.165	View precise location of 81.171.199.165 on the map!

10 Random IPs

84.145.23.18	Find precise map location of 84.145.23.18
250.56.37.247	Find precise map location of 250.56.37.247
73.83.100.221	Find precise map location of 73.83.100.221
21.142.242.143	Find precise map location of 21.142.242.143
36.239.117.8	Find precise map location of 36.239.117.8
192.253.191.242	Find precise map location of 192.253.191.242
158.145.15.131	Find precise map location of 158.145.15.131
73.47.73.24	Find precise map location of 73.47.73.24
70.16.115.187	Find precise map location of 70.16.115.187
24.207.91.149	Find precise map location of 24.207.91.149
116.94.70.196	Find precise map location of 116.94.70.196

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