Twin directories of virtualbox-guest-additions:

[DIR]  ftp://ftp.prz.rzeszow.pl/pub/gentoo/portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.uic.nnov.ru/pub/Linux/Debian/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.nz.debian.org/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.nz.debian.org/gentoo-x86-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.nz.debian.org/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/linux/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.kulnet.kuleuven.ac.be/mirror/ftp.debian.org/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://130.251.19.2/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://130.251.19.2/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.wh2.tu-dresden.de/pub/mirrors/ubuntu/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.cosy.sbg.ac.at/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.swin.edu.au/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.mgts.by/pub/gentoo/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://24.215.0.24/Debian/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://24.215.0.24/Ubuntu/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.cs.mun.ca/pub/mirror/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.cs.mun.ca/pub/mirror/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.lf.net/pub/Mirrors/ftp.debian.org/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://sapi.vlsm.org/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://91.189.88.46/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.free.fr/.mirrors6/ftp.ubuntu.com/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.ankara.edu.tr/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.ankara.edu.tr/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.fi.debian.org/pub/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.fi.debian.org/pub/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.easynet.fr/pub3/ftp.debian.org/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.rz.tu-bs.de/pub/mirror/ALL_primary_servers/rsync/mirrors.sec.informatik.tu-darmstadt.de/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.nl.kernel.org/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.cvut.cz/mirrors/debian.org/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.dei.uc.pt/pub/linux/gentoo/portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.botik.ru/pub/linux/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.med.univ-tours.fr/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.song.fi/pub/mirrors/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.tiscali.nl/pub/mirror/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.tiscali.nl/pub/mirror/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://147.52.159.12/mirrors/linux/ubuntu/packages/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://147.52.159.12/mirrors/linux/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://77.88.19.68/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp2.sk.freebsd.org/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp2.sk.freebsd.org/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.lug.udel.edu/pub/gentoo/portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://ftp.dei.uc.pt/pub/linux/ubuntu/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.udc.es/mirror/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://mirrors.hpcf.upr.edu/pub/Mirrors/ubuntu/archive/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.fh-giessen.de/pub/linux/ubuntu/ubuntu/pool/multiverse/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.zcu.cz/pub/linux/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://ftp.de.netclusive.de/pub/Linux/debian/pool/non-free/v/virtualbox-guest-additions/
[DIR]  ftp://mir1.ovh.net/lv0/gentoo-portage/app-emulation/virtualbox-guest-additions/
[DIR]  ftp://217.75.96.164/ubuntu/pool/multiverse/v/virtualbox-guest-additions/