81.230.159 is a class C of IPs

Sample IPs from the class C 81.230.159

81.230.159.113	View precise location of 81.230.159.113 on the map!
81.230.159.112	View precise location of 81.230.159.112 on the map!
81.230.159.124	View precise location of 81.230.159.124 on the map!
81.230.159.139	View precise location of 81.230.159.139 on the map!
81.230.159.183	View precise location of 81.230.159.183 on the map!
81.230.159.223	View precise location of 81.230.159.223 on the map!
81.230.159.233	View precise location of 81.230.159.233 on the map!
81.230.159.121	View precise location of 81.230.159.121 on the map!
81.230.159.188	View precise location of 81.230.159.188 on the map!
81.230.159.64	View precise location of 81.230.159.64 on the map!
81.230.159.98	View precise location of 81.230.159.98 on the map!

10 Random IPs

145.55.167.227	Find precise map location of 145.55.167.227
160.249.110.255	Find precise map location of 160.249.110.255
106.245.76.54	Find precise map location of 106.245.76.54
153.22.237.240	Find precise map location of 153.22.237.240
216.160.25.232	Find precise map location of 216.160.25.232
149.57.172.85	Find precise map location of 149.57.172.85
19.33.59.24	Find precise map location of 19.33.59.24
43.228.6.239	Find precise map location of 43.228.6.239
248.74.192.39	Find precise map location of 248.74.192.39
225.124.75.219	Find precise map location of 225.124.75.219
12.121.152.199	Find precise map location of 12.121.152.199

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