s1.iptv66.tv or s2.iptv66.tv
in your case it is the latter
s2.iptv66.tv
It shows you this when you log onto your code at iptv66.com
And with that avov, you may and probably will need the prefix added
so it would be like this...
if that still fails to work then try this..
Code:
http://s2.iptv66.tv/c/index.html