ftp://ftp.sanguine.net/pub/linux/centos/3.9/os/  direct

[DIR]s390x/  direct  4905+ twin directories
[DIR]s390/  direct  10525+ twin directories
[DIR]ia64/  direct  32506+ twin directories
[DIR]i386/  direct  65535+ twin directories
[DIR]SRPMS/  direct  43771+ twin directories