Twin directories of ping:

[DIR]  ftp://ftp.pcmag.ru/PCMag/Losik/ping/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-current/src/sbin/ping/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-3-0/src/sbin/ping/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-4-0/src/sbin/ping/
[DIR]  ftp://ftp.nsu.ru/mirrors/ftp.freebsd.org/pub/FreeBSD/development/NetBSD-CVS/src/sbin/ping/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://ftp.nsu.ru/mirrors/ftp.sunet.se/pub/lang/cygwin/release-2/ping/
[DIR]  ftp://ftp.nsu.ru/mirrors/ftp.sunet.se/pub/lang/cygwin/release/ping/
[DIR]  ftp://ftp.nsu.ru/mirrors/ftp.freebsd.org/pub/FreeBSD/development/DragonFlyBSD-CVS/src/sbin/ping/
[DIR]  ftp://ftp.nrc.ca/pub/systems/bsd/netbsd/NetBSD-current/src/sbin/ping/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://128.118.2.96/pub/.mirrors/1/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://192.87.102.42/vol/1/netbsd/NetBSD-release-3-1/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://ftp.mtu.ru/.4/NetBSD/NetBSD-release-3-1/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://128.118.2.96/pub/.mirrors/1/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-release-3-1/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://ftp.boulder.ibm.com/software/websphere/wasce/repository/org/apache/axis2/ping/
[DIR]  ftp://ftp.software.ibm.com/software/websphere/wasce/repository/org/apache/axis2/ping/
[DIR]  ftp://ftp.jp.netbsd.org/pub/NetBSD-cvs/main/src/sbin/ping/
[DIR]  ftp://ftp.funet.fi/.m/mirrors2/sources.redhat.com/pub/cygwin/release/ping/
[DIR]  ftp://ftp.su.se/pub/mirrors/cygwin.com/pub/cygwin/release/ping/
[DIR]  ftp://ftp.uvigo.es/mirror/volumes/vol3/sources.redhat.com/pub/cygwin/release/ping/
[DIR]  ftp://bo.mirror.garr.it/pub/1/sourceware.org/cygwin/release/ping/
[DIR]  ftp://bo.mirror.garr.it/pub/1/sourceware.org/cygwin/release-2/ping/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://192.87.102.42/vol/1/netbsd/NetBSD-release-4-0/src/sbin/ping/
[DIR]  ftp://192.87.102.42/vol/1/netbsd/NetBSD-release-3-1/src/sbin/ping/
[DIR]  ftp://ftp.usc.es/pub/mirror/cygwin/release-2/ping/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-current/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://ftp.in2p3.fr/pub/FreeBSD/branches/4.0-stable/src/sbin/ping/
[DIR]  ftp://ftp.in2p3.fr/pub/FreeBSD/branches/3.0-stable/src/sbin/ping/
[DIR]  ftp://ftp.in2p3.fr/pub/FreeBSD/branches/2.2-stable/src/sbin/ping/
[DIR]  ftp://ftp.in2p3.fr/pub/FreeBSD/branches/-current/src/sbin/ping/
[DIR]  ftp://ftp.ens-cachan.fr/mirror/CygWin/release-2/ping/
[DIR]  ftp://ftp.in2p3.fr/pub/cygwin/release-2/ping/
[DIR]  ftp://ftp.jp.xemacs.org/pub/pc/gnu-win32/release-2/ping/
[DIR]  ftp://ftp.funet.fi/.m/mirrors2/sources.redhat.com/pub/cygwin/release-2/ping/
[DIR]  ftp://ftp2.au.freebsd.org/pub/sourceware/cygwin/release-2/ping/
[DIR]  ftp://ftp.su.se/pub/mirrors/cygwin.com/pub/cygwin/release-2/ping/
[DIR]  ftp://ftp.uvigo.es/mirror/volumes/vol3/sources.redhat.com/pub/cygwin/release-2/ping/
[DIR]  ftp://129.102.1.25/pub/pure-ftpd/misc/ping/
[DIR]  ftp://ftp.cpan.nl/pub/pure-ftpd/misc/ping/
[DIR]  ftp://ftp.uvsq.fr/pub/networking/ftp/pure-ftpd/misc/ping/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/distrib/acorn32/ramdisk/ping/
[DIR]  ftp://128.118.2.96/pub/.mirrors/1/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/distrib/acorn32/ramdisk/ping/