99.81.72 is a class C of IPs

Sample IPs from the class C 99.81.72

99.81.72.231	View precise location of 99.81.72.231 on the map!
99.81.72.123	View precise location of 99.81.72.123 on the map!
99.81.72.88	View precise location of 99.81.72.88 on the map!
99.81.72.165	View precise location of 99.81.72.165 on the map!
99.81.72.155	View precise location of 99.81.72.155 on the map!
99.81.72.225	View precise location of 99.81.72.225 on the map!
99.81.72.92	View precise location of 99.81.72.92 on the map!
99.81.72.158	View precise location of 99.81.72.158 on the map!
99.81.72.157	View precise location of 99.81.72.157 on the map!
99.81.72.23	View precise location of 99.81.72.23 on the map!
99.81.72.107	View precise location of 99.81.72.107 on the map!

10 Random IPs

64.84.220.68	Find precise map location of 64.84.220.68
241.191.20.46	Find precise map location of 241.191.20.46
14.12.37.65	Find precise map location of 14.12.37.65
184.107.143.3	Find precise map location of 184.107.143.3
75.117.190.243	Find precise map location of 75.117.190.243
159.27.181.151	Find precise map location of 159.27.181.151
251.115.45.127	Find precise map location of 251.115.45.127
208.162.216.77	Find precise map location of 208.162.216.77
252.139.150.212	Find precise map location of 252.139.150.212
70.243.110.127	Find precise map location of 70.243.110.127
108.178.49.152	Find precise map location of 108.178.49.152

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