Twin directories of NetBSD-release-4-0:

[DIR]  ftp://192.87.102.42/vol/1/netbsd/NetBSD-release-4-0/
[DIR]  ftp://ftp.jp.xemacs.org/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.cz.netbsd.org/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.nrc.ca/pub/systems/bsd/netbsd/NetBSD-release-4-0/
[DIR]  ftp://ftp.mtu.ru/.4/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.funet.fi/.m/mirrors5/ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-4-0/
[DIR]  ftp://ftp.udc.es/mirror/netbsd/NetBSD-release-4-0/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://128.118.2.96/pub/.mirrors/1/ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.duth.gr/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/NetBSD-release-4-0/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-release-4-0/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-4-0/
[DIR]  ftp://129.186.1.197/pub/netbsd/NetBSD-release-4-0/