66.204.209 is a class C of IPs

Sample IPs from the class C 66.204.209

66.204.209.72	View precise location of 66.204.209.72 on the map!
66.204.209.224	View precise location of 66.204.209.224 on the map!
66.204.209.12	View precise location of 66.204.209.12 on the map!
66.204.209.203	View precise location of 66.204.209.203 on the map!
66.204.209.63	View precise location of 66.204.209.63 on the map!
66.204.209.207	View precise location of 66.204.209.207 on the map!
66.204.209.81	View precise location of 66.204.209.81 on the map!
66.204.209.221	View precise location of 66.204.209.221 on the map!
66.204.209.112	View precise location of 66.204.209.112 on the map!
66.204.209.130	View precise location of 66.204.209.130 on the map!
66.204.209.135	View precise location of 66.204.209.135 on the map!

10 Random IPs

222.107.234.100	Find precise map location of 222.107.234.100
116.245.106.150	Find precise map location of 116.245.106.150
133.173.24.170	Find precise map location of 133.173.24.170
97.40.114.115	Find precise map location of 97.40.114.115
127.66.113.122	Find precise map location of 127.66.113.122
78.129.100.51	Find precise map location of 78.129.100.51
244.114.136.20	Find precise map location of 244.114.136.20
128.249.181.74	Find precise map location of 128.249.181.74
2.1.6.45	Find precise map location of 2.1.6.45
74.238.202.54	Find precise map location of 74.238.202.54
221.178.49.20	Find precise map location of 221.178.49.20

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