Which CD is a package on?

[Jerome Warnier <jwarnier@beeznest.net>]

I wonder if it is possible to find out on which CD of a stable release
the package I look for is?

I guess it is possible, as apt can do it.
But is it available somewhere online?

Thanks
-- 
Jerome Warnier <jwarnier@beeznest.net>
BeezNest