PTR in DIG DNS

palisetty_suman · 05-03-2009, 04:07 PM

Hi all,

i just want to know the usage of PTR, which is for REVERSE DNS. For example for normal DNS, the usage to find the address is

#dig A www.google.com

what is the usage for PTR? Thanks.

acid_kewpie · 05-03-2009, 04:27 PM

dig -x 1.2.3.4

palisetty_suman · 05-03-2009, 04:38 PM

Hi what is -x here? Thanks.

TB0ne · 05-03-2009, 04:44 PM

Quote:

Originally Posted by palisetty_suman

Hi what is -x here? Thanks.

From the MAN page on dig, it specifies the address. Hence the 1.2.3.4 in the example.

pixellany · 05-03-2009, 04:46 PM

palisetty;

I have previously suggested to you that you avoid asking simple questions like this with no evidence of making any effort. If you look at the man page for dig, the answer to your question pretty much jumps off the page.

acid_kewpie · 05-04-2009, 02:19 AM

All my years here and that still baffles me completely. The amount of *extra* work and time it took to post a thread and reply as well compared to just reading a manpage...

pixellany · 05-04-2009, 07:06 AM

Part of it--I suppose--is how the person perceives the difficulty of something. For the newcomer, man pages CAN be intimidating. But with someone who has been here a while, we should expect some effort before asking ultra-simple questions.

john test · 05-04-2009, 08:27 AM

Here's a nice write-up on ptr/dig -x
http://aplawrence.com/Blog/B961.html