81.9 is a class B of IPs

Sample IPs from the class B 81.9

81.9.246.136	View precise location of 81.9.246.136 on the map!
81.9.99.24	View precise location of 81.9.99.24 on the map!
81.9.209.44	View precise location of 81.9.209.44 on the map!
81.9.53.161	View precise location of 81.9.53.161 on the map!
81.9.125.38	View precise location of 81.9.125.38 on the map!
81.9.144.206	View precise location of 81.9.144.206 on the map!
81.9.149.136	View precise location of 81.9.149.136 on the map!
81.9.76.19	View precise location of 81.9.76.19 on the map!
81.9.173.119	View precise location of 81.9.173.119 on the map!
81.9.20.37	View precise location of 81.9.20.37 on the map!
81.9.139.100	View precise location of 81.9.139.100 on the map!

10 Random IPs

66.170.54.61	Find precise map location of 66.170.54.61
241.89.47.231	Find precise map location of 241.89.47.231
150.254.113.133	Find precise map location of 150.254.113.133
135.170.181.187	Find precise map location of 135.170.181.187
116.123.146.153	Find precise map location of 116.123.146.153
159.90.198.50	Find precise map location of 159.90.198.50
248.117.138.94	Find precise map location of 248.117.138.94
184.223.99.161	Find precise map location of 184.223.99.161
72.220.152.74	Find precise map location of 72.220.152.74
134.134.124.10	Find precise map location of 134.134.124.10
2.90.103.148	Find precise map location of 2.90.103.148

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