ftp://ftp.uni-frankfurt.de/pub/Mirrors/centos/4.6/os/x86_64/CentOS/  direct

[DIR]base/  direct  32143+ twin directories
[DIR]RPMS/  direct  39764+ twin directories
22 B  2006-12-16HEADER.images  11187+ mirrors
20 B  2006-12-16HEADER.html  10768+ mirrors