128.217.121 is a class C of IPs

Sample IPs from the class C 128.217.121

128.217.121.8	View precise location of 128.217.121.8 on the map!
128.217.121.130	View precise location of 128.217.121.130 on the map!
128.217.121.186	View precise location of 128.217.121.186 on the map!
128.217.121.172	View precise location of 128.217.121.172 on the map!
128.217.121.184	View precise location of 128.217.121.184 on the map!
128.217.121.172	View precise location of 128.217.121.172 on the map!
128.217.121.216	View precise location of 128.217.121.216 on the map!
128.217.121.118	View precise location of 128.217.121.118 on the map!
128.217.121.219	View precise location of 128.217.121.219 on the map!
128.217.121.58	View precise location of 128.217.121.58 on the map!
128.217.121.139	View precise location of 128.217.121.139 on the map!

10 Random IPs

37.188.142.112	Find precise map location of 37.188.142.112
114.178.97.204	Find precise map location of 114.178.97.204
92.139.244.93	Find precise map location of 92.139.244.93
86.92.96.112	Find precise map location of 86.92.96.112
65.116.96.69	Find precise map location of 65.116.96.69
231.6.218.163	Find precise map location of 231.6.218.163
103.162.168.48	Find precise map location of 103.162.168.48
212.159.223.112	Find precise map location of 212.159.223.112
85.78.50.33	Find precise map location of 85.78.50.33
112.216.77.210	Find precise map location of 112.216.77.210
163.70.255.34	Find precise map location of 163.70.255.34

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