Twin directories of a:

[DIR]  ftp://ftp.splack.org/pub/splack/splack-10.2/notbuilt/pkg/a/
[DIR]  ftp://ftp.splack.org/pub/splack/splack-10.2/notbuilt/src/a/
[DIR]  ftp://ftp.splack.org/pub/splack/splack-10.2/source/a/
[DIR]  ftp://ftp.udc.es/mirror/ubuntu/pool/main/a/
[DIR]  ftp://ftp.il.kernel.org/pub/linux/ubuntu/pool/main/a/
[DIR]  ftp://ftp.ula.ve/linux/distribuciones/ubuntu/pool/main/a/
[DIR]  ftp://ftp.lug.udel.edu/pub/ubuntu/pool/main/a/
[DIR]  ftp://ftp.splack.org/pub/armedslack/armedslack-11.0/slackware/a/
[DIR]  ftp://ftp.net.ohio-state.edu/disk/a/
[DIR]  ftp://ftp.uni-giessen.de/pub/linux/debian/pool/main/a/
[DIR]  ftp://ftp.worldofspectrum.org/pub/sinclair/games-info/a/
[DIR]  ftp://ftp.worldofspectrum.org/pub/sinclair/games-inlays/a/
[DIR]  ftp://ftp.worldofspectrum.org/pub/sinclair/games-inlays/Rereleases/a/
[DIR]  ftp://ftp.dei.uc.pt/pub/linux/ubuntu/ubuntu/pool/universe/a/
[DIR]  ftp://ftp.rz.tu-bs.de/pub/mirror/.mounts/sdc1/archive.ubuntu.com/ubuntu/pool/universe/a/
[DIR]  ftp://ftp.lv.kernel.org/ubuntu/pool/universe/a/
[DIR]  ftp://ftp.tuke.sk/ubuntu/pool/universe/a/
[DIR]  ftp://ftp.iavsc.org/pub/linux/distributions/Debian/pool/main/a/
[DIR]  ftp://ftp.cesnet.cz/.vol/archive.ubuntu.com/mirror/ubuntu/pool/universe/a/
[DIR]  ftp://ftp.swcp.com/pub/tmp/a/
[DIR]  ftp://ftp.lv.kernel.org/slamd64/slamd64-current/slackware/a/
[DIR]  ftp://ftp.lv.kernel.org/slamd64/slamd64-current/source/a/
[DIR]  ftp://ftp.carnet.hr/carnet-debian/pool/main/a/
[DIR]  ftp://ftp.netvision.net.il/home/a/
[DIR]  ftp://ftp.imt-mrs.fr/pub5/debian/pool/main/a/
[DIR]  ftp://ftp.sci.usq.edu.au/pub/debian/debian/pool/main/a/
[DIR]  ftp://ftp.univ-savoie.fr/pub1/ftp.fr.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.cosy.sbg.ac.at/debian/pool/main/a/
[DIR]  ftp://ftp.cesnet.cz/.vol/ftp.xfree86.org/pub/mirror/X.Org/contrib/games/multiplayer/flyboy/acm/acm/a/
[DIR]  ftp://ftp.zcu.cz/pub/linux/debian/pool/main/a/
[DIR]  ftp://ftp.cesnet.cz/.vol/releases.ubuntulinux.org/ubuntu/pool/universe/a/
[DIR]  ftp://ftp.cesnet.cz/.vol/releases.ubuntulinux.org/ubuntu/pool/multiverse/a/
[DIR]  ftp://ftp.funet.fi/.m/mirrors3/ftp.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.cesnet.cz/.vol/releases.ubuntulinux.org/ubuntu/pool/main/a/
[DIR]  ftp://ftp.uni-kassel.de/Mirrors1/ftp.de.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.uni-augsburg.de/mirrors/debian/ftp.de.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.rz.uni-karlsruhe.de/pub/mirror/ftp.de.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.pbone.net/vol9/ftp.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.ps.pl/dsk0/ftp.debian.org/pool/main/a/
[DIR]  ftp://64.50.236.52/.1/debian/debian/pool/main/a/
[DIR]  ftp://64.50.238.52/.1/debian/debian/pool/main/a/
[DIR]  ftp://ftp.3logic.net/.1/debian/pool/main/a/
[DIR]  ftp://ftp.tu-ilmenau.de/Mirrors/ftp.de.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.debian.de/debian-ports/pool/main/a/
[DIR]  ftp://193.226.140.51/debian/pool/main/a/
[DIR]  ftp://debian.lcs.mit.edu/debian/pool/main/a/
[DIR]  ftp://ftp.ankara.edu.tr/debian/pool/main/a/
[DIR]  ftp://ftp.bg.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.cl.debian.org/debian/pool/main/a/
[DIR]  ftp://ftp.debian.de/debian/pool/main/a/