debian man page for fdnsnamep

fdnsnamep(1)						      General Commands Manual						      fdnsnamep(1)

NAME
       fdnsnamep - resolve an IPv4 or IPv6 address to a hostname with paranoid checking

SYNOPSIS
       fdnsname <IP address>

DESCRIPTION
       fdnsname  will  attempt	to  look up a single hostname for IP address (which is an IPv4 address in dotted-quad format or an IPv6 address in
       colon-seperated format).  If one is found, the program checks to make sure that the hostname has a corresponding A or AAAA record  pointing
       back  to  the  supplied	IP.   If so, the hostname is printed to standard output and the program exits with return code 0.  If the paranoid
       check fails, nothing is printed and the program exits with return code 3.  If no hostname is found, nothing  is	printed  and  the  program
       exits with return code 1.

AUTHOR
       Ian Gulliver <ian@penguinhosting.net>

SEE ALSO
       libfiredns(3)

								    2004-02-13							      fdnsnamep(1)