81.17.23 is a class C of IPs

Sample IPs from the class C 81.17.23

81.17.23.97	View precise location of 81.17.23.97 on the map!
81.17.23.82	View precise location of 81.17.23.82 on the map!
81.17.23.37	View precise location of 81.17.23.37 on the map!
81.17.23.216	View precise location of 81.17.23.216 on the map!
81.17.23.145	View precise location of 81.17.23.145 on the map!
81.17.23.167	View precise location of 81.17.23.167 on the map!
81.17.23.148	View precise location of 81.17.23.148 on the map!
81.17.23.128	View precise location of 81.17.23.128 on the map!
81.17.23.6	View precise location of 81.17.23.6 on the map!
81.17.23.177	View precise location of 81.17.23.177 on the map!
81.17.23.114	View precise location of 81.17.23.114 on the map!

10 Random IPs

168.198.4.233	Find precise map location of 168.198.4.233
96.251.244.202	Find precise map location of 96.251.244.202
187.175.202.171	Find precise map location of 187.175.202.171
70.135.51.18	Find precise map location of 70.135.51.18
207.74.170.119	Find precise map location of 207.74.170.119
81.22.103.116	Find precise map location of 81.22.103.116
23.38.43.207	Find precise map location of 23.38.43.207
46.29.35.164	Find precise map location of 46.29.35.164
174.191.134.60	Find precise map location of 174.191.134.60
159.159.205.242	Find precise map location of 159.159.205.242
86.53.166.136	Find precise map location of 86.53.166.136

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