204.210.21 is a class C of IPs

Sample IPs from the class C 204.210.21

204.210.21.232	View precise location of 204.210.21.232 on the map!
204.210.21.57	View precise location of 204.210.21.57 on the map!
204.210.21.8	View precise location of 204.210.21.8 on the map!
204.210.21.47	View precise location of 204.210.21.47 on the map!
204.210.21.54	View precise location of 204.210.21.54 on the map!
204.210.21.55	View precise location of 204.210.21.55 on the map!
204.210.21.36	View precise location of 204.210.21.36 on the map!
204.210.21.97	View precise location of 204.210.21.97 on the map!
204.210.21.147	View precise location of 204.210.21.147 on the map!
204.210.21.242	View precise location of 204.210.21.242 on the map!
204.210.21.131	View precise location of 204.210.21.131 on the map!

10 Random IPs

195.218.163.5	Find precise map location of 195.218.163.5
222.237.220.75	Find precise map location of 222.237.220.75
39.126.122.142	Find precise map location of 39.126.122.142
53.125.235.32	Find precise map location of 53.125.235.32
158.165.39.62	Find precise map location of 158.165.39.62
122.157.43.170	Find precise map location of 122.157.43.170
223.110.249.142	Find precise map location of 223.110.249.142
127.25.241.42	Find precise map location of 127.25.241.42
247.190.122.75	Find precise map location of 247.190.122.75
90.206.191.132	Find precise map location of 90.206.191.132
125.30.177.78	Find precise map location of 125.30.177.78

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