216.199.81 is a class C of IPs

Sample IPs from the class C 216.199.81

216.199.81.168	View precise location of 216.199.81.168 on the map!
216.199.81.56	View precise location of 216.199.81.56 on the map!
216.199.81.230	View precise location of 216.199.81.230 on the map!
216.199.81.113	View precise location of 216.199.81.113 on the map!
216.199.81.87	View precise location of 216.199.81.87 on the map!
216.199.81.61	View precise location of 216.199.81.61 on the map!
216.199.81.60	View precise location of 216.199.81.60 on the map!
216.199.81.183	View precise location of 216.199.81.183 on the map!
216.199.81.236	View precise location of 216.199.81.236 on the map!
216.199.81.23	View precise location of 216.199.81.23 on the map!
216.199.81.175	View precise location of 216.199.81.175 on the map!

10 Random IPs

79.166.223.38	Find precise map location of 79.166.223.38
130.130.188.45	Find precise map location of 130.130.188.45
92.181.21.244	Find precise map location of 92.181.21.244
153.108.235.115	Find precise map location of 153.108.235.115
97.235.197.196	Find precise map location of 97.235.197.196
238.66.244.150	Find precise map location of 238.66.244.150
243.22.52.232	Find precise map location of 243.22.52.232
214.62.226.108	Find precise map location of 214.62.226.108
239.29.164.86	Find precise map location of 239.29.164.86
132.249.134.89	Find precise map location of 132.249.134.89
9.116.132.5	Find precise map location of 9.116.132.5

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