Twin directories of headers:

[DIR]  ftp://ftp.nectec.or.th/.a/3/WhiteBox/4/en/updates/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/44/x86_64/sites/Fermi/workgroups/CDFCAFworker/RPMS/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/.snapshot/NDMP_AUTO_SNAPSHOT316/linux/fermi/lts4rolling/x86_64/sites/Fermi/workgroups/CDFCAFworker/RPMS/headers/
[DIR]  ftp://ftp.nectec.or.th/.a/3/WhiteBox/3.0/en/updates/headers/
[DIR]  ftp://ftp.rhrz.uni-bonn.de/pub-koeln/mirrors/fedora/epel/4/SRPMS/headers/
[DIR]  ftp://ftp.rhrz.uni-bonn.de/pub-koeln/mirrors/fedora/epel/4/i386/headers/
[DIR]  ftp://ftp.rhrz.uni-bonn.de/pub-koeln/mirrors/fedora/epel/4/ppc/headers/
[DIR]  ftp://ftp.rhrz.uni-bonn.de/pub-koeln/mirrors/fedora/epel/4/x86_64/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/epel/4/SRPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/epel/4/i386/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/epel/4/ppc/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/epel/4/x86_64/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/4.5/os/s390x/headers/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/unix/linux/Mirror/centos/4.5/os/s390x/headers/
[DIR]  ftp://ftp.ncnu.edu.tw/Linux/CentOS/4.5/os/s390x/headers/
[DIR]  ftp://ftp.sg.freebsd.org/d/b/centos/4.5/os/s390x/headers/
[DIR]  ftp://ftp.hol.gr/pub/LinuxSection/distributions/centos/4.5/os/s390x/headers/
[DIR]  ftp://ftp.ut.ee/pub/centos/4.5/os/s390x/headers/
[DIR]  ftp://208.209.50.19/pub/linux/centos/4.5/os/s390x/headers/
[DIR]  ftp://ftp.crc.dk/pub/mirrors/centos/4.5/os/s390x/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/2.1/extras/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/4.5/addons/SRPMS/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/4.5/addons/i386/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/4.5/contrib/SRPMS/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/4.5/contrib/i386/headers/
[DIR]  ftp://ftp.cs.cuhk.hk/pub5/CentOS/4.5/addons/SRPMS/headers/
[DIR]  ftp://ftp.cs.cuhk.hk/pub5/CentOS/4.5/addons/i386/headers/
[DIR]  ftp://ftp.cs.cuhk.hk/pub5/CentOS/4.5/contrib/SRPMS/headers/
[DIR]  ftp://ftp.cs.cuhk.hk/pub5/CentOS/4.5/contrib/i386/headers/
[DIR]  ftp://ftp.cs.pu.edu.tw/Linux/CentOS/4.5/os/i386/headers/
[DIR]  ftp://ftp.cs.cuhk.hk/pub5/CentOS/4.5/os/i386/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/305/i386/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/308/i386/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/42/x86_64/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/42/i386/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/43/i386/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/43/x86_64/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/44/i386/contrib/RPMS/headers/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/44/x86_64/contrib/RPMS/headers/
[DIR]  ftp://ftp.ncnu.edu.tw/Linux/CentOS/2.1/extras/headers/
[DIR]  ftp://ftp.sg.freebsd.org/d/b/centos/2.1/extras/headers/
[DIR]  ftp://ftp.hol.gr/pub/LinuxSection/distributions/centos/2.1/extras/headers/
[DIR]  ftp://ftp.ut.ee/pub/centos/2.1/extras/headers/
[DIR]  ftp://ftp.crc.dk/pub/mirrors/centos/2.1/extras/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/304/x86_64/sites/Fermi/contrib/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/305/x86_64/sites/Fermi/contrib/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/308/x86_64/sites/Fermi/contrib/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/304/i386/sites/Fermi/contrib/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/305/i386/sites/Fermi/contrib/headers/
[DIR]  ftp://ftp.scientificlinux.org/disk/disk4/linux/scientific/303/i386/sites/Fermi/contrib/headers/