224.240.121 is a class C of IPs

Sample IPs from the class C 224.240.121

224.240.121.45	View precise location of 224.240.121.45 on the map!
224.240.121.170	View precise location of 224.240.121.170 on the map!
224.240.121.213	View precise location of 224.240.121.213 on the map!
224.240.121.161	View precise location of 224.240.121.161 on the map!
224.240.121.207	View precise location of 224.240.121.207 on the map!
224.240.121.249	View precise location of 224.240.121.249 on the map!
224.240.121.11	View precise location of 224.240.121.11 on the map!
224.240.121.61	View precise location of 224.240.121.61 on the map!
224.240.121.166	View precise location of 224.240.121.166 on the map!
224.240.121.247	View precise location of 224.240.121.247 on the map!
224.240.121.183	View precise location of 224.240.121.183 on the map!

10 Random IPs

125.90.223.253	Find precise map location of 125.90.223.253
236.162.101.64	Find precise map location of 236.162.101.64
168.184.150.58	Find precise map location of 168.184.150.58
111.155.78.20	Find precise map location of 111.155.78.20
39.185.142.137	Find precise map location of 39.185.142.137
201.11.45.52	Find precise map location of 201.11.45.52
45.202.158.222	Find precise map location of 45.202.158.222
141.214.74.89	Find precise map location of 141.214.74.89
71.232.36.175	Find precise map location of 71.232.36.175
72.166.229.58	Find precise map location of 72.166.229.58
71.71.213.194	Find precise map location of 71.71.213.194

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