ftp://ftp.uni-frankfurt.de/pub/Mirrors2/gentoo.org/experimental/x86/stages/  direct

[DIR]x86/  direct  13502+ twin directories
[DIR]pentium4/  direct  379+ twin directories
[DIR]pentium3/  direct  339+ twin directories
[DIR]i686/  direct  6661+ twin directories
[DIR]athlon-xp/  direct  245+ twin directories