Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

Re: Net::Nslookup PTR lookup help (use Net::DNS)

by grinder (Bishop)
on Jan 28, 2009 at 13:52 UTC ( #739560=note: print w/ replies, xml ) Need Help??


in reply to Net::Nslookup PTR lookup help

Personally, I find Net::DNS much easier to use. Consider:

#! /usr/bin/perl -w use strict; use Net::DNS; my $r = Net::DNS::Resolver->new; for my $ip (@ARGV) { my $reverse = join( '.', reverse( split /\./, $ip )) . '.in-addr.a +rpa'; if (my $ap = $r->query( $reverse, 'PTR' )) { for my $pa ($ap->answer) { print "$ip => ", $pa->ptrdname, $/; } } else { print "$ip => NXDOMAIN\n"; } } __OUTPUT__ ./ptr 69.147.76.15 69.147.76.15 => f1.www.vip.re1.yahoo.com

Update: easier... hmmm... let me rephrase that: "gives me finer control over what I want to do". It's a really useful module to have in your toolkit if you ever have to grovel around with CNAME, MX, NS, SOA records and the like.

2nd update: new improved! with error checking!

• another intruder with the mooring in the heart of the Perl


Comment on Re: Net::Nslookup PTR lookup help (use Net::DNS)
Download Code
Re^2: Net::Nslookup PTR lookup help (use Net::DNS)
by blackstealth (Novice) on Jan 28, 2009 at 14:05 UTC
    Thank you very much i have tired that out and it works.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://739560]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (6)
As of 2015-07-05 07:31 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (60 votes), past polls