221.163.240 is a class C of IPs

Sample IPs from the class C 221.163.240

221.163.240.145	View precise location of 221.163.240.145 on the map!
221.163.240.143	View precise location of 221.163.240.143 on the map!
221.163.240.197	View precise location of 221.163.240.197 on the map!
221.163.240.79	View precise location of 221.163.240.79 on the map!
221.163.240.186	View precise location of 221.163.240.186 on the map!
221.163.240.253	View precise location of 221.163.240.253 on the map!
221.163.240.44	View precise location of 221.163.240.44 on the map!
221.163.240.80	View precise location of 221.163.240.80 on the map!
221.163.240.11	View precise location of 221.163.240.11 on the map!
221.163.240.118	View precise location of 221.163.240.118 on the map!
221.163.240.241	View precise location of 221.163.240.241 on the map!

10 Random IPs

169.9.172.104	Find precise map location of 169.9.172.104
32.205.224.80	Find precise map location of 32.205.224.80
238.157.15.49	Find precise map location of 238.157.15.49
176.63.170.46	Find precise map location of 176.63.170.46
111.240.150.89	Find precise map location of 111.240.150.89
178.107.47.65	Find precise map location of 178.107.47.65
197.247.157.29	Find precise map location of 197.247.157.29
64.161.8.211	Find precise map location of 64.161.8.211
16.172.165.218	Find precise map location of 16.172.165.218
230.179.160.2	Find precise map location of 230.179.160.2
117.132.188.222	Find precise map location of 117.132.188.222

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