81.61.20 is a class C of IPs

Sample IPs from the class C 81.61.20

81.61.20.119	View precise location of 81.61.20.119 on the map!
81.61.20.49	View precise location of 81.61.20.49 on the map!
81.61.20.218	View precise location of 81.61.20.218 on the map!
81.61.20.39	View precise location of 81.61.20.39 on the map!
81.61.20.16	View precise location of 81.61.20.16 on the map!
81.61.20.149	View precise location of 81.61.20.149 on the map!
81.61.20.177	View precise location of 81.61.20.177 on the map!
81.61.20.59	View precise location of 81.61.20.59 on the map!
81.61.20.156	View precise location of 81.61.20.156 on the map!
81.61.20.34	View precise location of 81.61.20.34 on the map!
81.61.20.97	View precise location of 81.61.20.97 on the map!

10 Random IPs

143.97.222.195	Find precise map location of 143.97.222.195
35.228.252.181	Find precise map location of 35.228.252.181
13.116.123.153	Find precise map location of 13.116.123.153
172.12.81.221	Find precise map location of 172.12.81.221
100.73.214.36	Find precise map location of 100.73.214.36
69.68.133.31	Find precise map location of 69.68.133.31
149.230.84.54	Find precise map location of 149.230.84.54
135.122.156.15	Find precise map location of 135.122.156.15
185.111.78.143	Find precise map location of 185.111.78.143
197.184.177.75	Find precise map location of 197.184.177.75
114.173.128.55	Find precise map location of 114.173.128.55

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