99.83.31 is a class C of IPs

Sample IPs from the class C 99.83.31

99.83.31.107	View precise location of 99.83.31.107 on the map!
99.83.31.240	View precise location of 99.83.31.240 on the map!
99.83.31.139	View precise location of 99.83.31.139 on the map!
99.83.31.241	View precise location of 99.83.31.241 on the map!
99.83.31.144	View precise location of 99.83.31.144 on the map!
99.83.31.124	View precise location of 99.83.31.124 on the map!
99.83.31.20	View precise location of 99.83.31.20 on the map!
99.83.31.121	View precise location of 99.83.31.121 on the map!
99.83.31.212	View precise location of 99.83.31.212 on the map!
99.83.31.85	View precise location of 99.83.31.85 on the map!
99.83.31.22	View precise location of 99.83.31.22 on the map!

10 Random IPs

185.92.77.199	Find precise map location of 185.92.77.199
61.211.146.80	Find precise map location of 61.211.146.80
255.32.206.11	Find precise map location of 255.32.206.11
201.22.96.38	Find precise map location of 201.22.96.38
84.107.171.175	Find precise map location of 84.107.171.175
52.160.131.221	Find precise map location of 52.160.131.221
182.183.188.161	Find precise map location of 182.183.188.161
246.35.243.68	Find precise map location of 246.35.243.68
49.228.22.236	Find precise map location of 49.228.22.236
143.129.214.224	Find precise map location of 143.129.214.224
90.131.115.94	Find precise map location of 90.131.115.94

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