Reverse DNS lookup in perl

perl ip lookup nslookup reverse-dns
Joakim picture Joakim · Sep 17, 2008 · Viewed 28.9k times · Source

How do I perform a reverse DNS lookup, that is how do I resolve an IP address to its DNS hostname in Perl?

Answer

JBB picture JBB · Sep 17, 2008

gethostbyaddr and similar calls. See http://perldoc.perl.org/functions/gethostbyaddr.html

Related questions

Find size of an array in Perl

I seem to have come across several different ways to find the size of an array. What is the difference between these three methods? my @arr = (2); print scalar @arr; # First way to print array size print $#arr; # Second way to …

Read More
How do I break out of a loop in Perl?

I'm trying to use a break statement in a for loop, but since I'm also using strict subs in my Perl code, I'm getting an error saying: Bareword "break" not allowed while "strict subs" in use at ./final.pl line 154. …

Read More
How to fix a locale setting warning from Perl?

When I run perl, I get the warning: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling …

Read More