121.240.84 is a class C of IPs

Sample IPs from the class C 121.240.84

121.240.84.160	View precise location of 121.240.84.160 on the map!
121.240.84.84	View precise location of 121.240.84.84 on the map!
121.240.84.230	View precise location of 121.240.84.230 on the map!
121.240.84.19	View precise location of 121.240.84.19 on the map!
121.240.84.112	View precise location of 121.240.84.112 on the map!
121.240.84.83	View precise location of 121.240.84.83 on the map!
121.240.84.147	View precise location of 121.240.84.147 on the map!
121.240.84.39	View precise location of 121.240.84.39 on the map!
121.240.84.223	View precise location of 121.240.84.223 on the map!
121.240.84.82	View precise location of 121.240.84.82 on the map!
121.240.84.128	View precise location of 121.240.84.128 on the map!

10 Random IPs

21.54.192.13	Find precise map location of 21.54.192.13
64.243.74.107	Find precise map location of 64.243.74.107
56.144.188.192	Find precise map location of 56.144.188.192
238.243.59.245	Find precise map location of 238.243.59.245
38.6.192.188	Find precise map location of 38.6.192.188
55.159.236.207	Find precise map location of 55.159.236.207
244.32.146.32	Find precise map location of 244.32.146.32
247.150.219.235	Find precise map location of 247.150.219.235
109.178.213.149	Find precise map location of 109.178.213.149
29.56.26.94	Find precise map location of 29.56.26.94
156.120.61.184	Find precise map location of 156.120.61.184

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