Twin directories of ddb:

[DIR]  ftp://ftp.dot.state.tx.us/pub/txdot-info/isd/geopakv8/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d0/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d1/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d2/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d3/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d4/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d5/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d6/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d7/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d8/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/d9/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/da/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/db/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/dc/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/dd/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/de/ddb/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/stkpp/stkpp/Doxygen/html/df/ddb/
[DIR]  ftp://ftp.mcs.vuw.ac.nz/_mnt/archive/comp/sources/misc/volume47/ddb/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/FreeBSD/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/FreeBSD/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/NetBSD-release-4-0/src/sys/ddb/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/NetBSD-current/src/sys/ddb/
[DIR]  ftp://ftp.mcs.vuw.ac.nz/_mnt/archive/comp/sources/misc/volume40/ddb/
[DIR]  ftp://ftp.mcs.vuw.ac.nz/_mnt/archive/comp/sources/misc/volume41/ddb/
[DIR]  ftp://ftp.mcs.vuw.ac.nz/_mnt/archive/comp/sources/misc/volume42/ddb/
[DIR]  ftp://ftp.mcs.vuw.ac.nz/_mnt/archive/comp/sources/misc/volume43/ddb/
[DIR]  ftp://ftp.swin.edu.au/freebsd/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp.swin.edu.au/freebsd/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-4-0/src/sys/ddb/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/sys/ddb/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-0/src/sys/ddb/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-current/src/sys/ddb/
[DIR]  ftp://ftp.sk.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp.sk.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp.ps.pl/dsk0/ftp.openbsd.org/src/regress/sys/ddb/
[DIR]  ftp://ftp.ps.pl/dsk0/ftp.openbsd.org/src/sys/arch/luna88k/ddb/
[DIR]  ftp://ftp.ps.pl/dsk0/ftp.openbsd.org/src/sys/ddb/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-4-0/src/sys/ddb/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-1/src/sys/ddb/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-0/src/sys/ddb/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-current/src/sys/ddb/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.freebsd.org/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.freebsd.org/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp.dc.aleron.net/pub/FreeBSD/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp.dc.aleron.net/pub/FreeBSD/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp.cse.buffalo.edu/mirror/BSD/FreeBSD/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp.cse.buffalo.edu/mirror/BSD/FreeBSD/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp13.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sbin/ddb/
[DIR]  ftp://ftp13.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sys/ddb/
[DIR]  ftp://ftp13.freebsd.org/cvsup/ncvs/src/sys/ddb/