DNS: Dig returns different responses... Post: 302885918

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Special Forums IP Networking DNS: Dig returns different responses... Post 302885918 by Lost in Cyberia on Wednesday 29th of January 2014 01:42:40 AM

01-29-2014

Registered User

DNS: Dig returns different responses...

Hey everyone,
Okay, so I've been having some fun with the dig command, and wanted to dig my old school. Two questions came up from this. So I:

Code:

dig @8.8.8.8 +recurse njcu.edu ANY

and the result is about 8 records, including the SOA record. One of them is this weird TXT record, and the other is an MX and A record. The rest are auth servers which I'm assuming are DNS.

Now I know for a fact we have many subdomains..gothicnet.njcu.edu... web.njcu.edu.... etc.. why aren't those listed here? They all have IP's that are on the same IP range as the main site, njcu.edu. I can dig them individually, but why can't if I use the +recurse option see every subdomain under njcu.edu?

My other question is when I do a

Code:

 dig +recurse njcu.edu ANY

This uses the DNS my ISP provides instead of google's 8.8.8.8 What I've noticed is when I do this...I only get back like half of the results, I got before, but then I also get back in the "additional Section" of the response, AAAA records which I didn't get before. And if I do this same query again immediately after, I get even less results. Why is this? Shouldn't each query give you the same exact response no matter where you get it from?

Thanks guys

Lost in Cyberia

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LEARN ABOUT DEBIAN

dns_tree

dns_browse(1)						      General Commands Manual						     dns_browse(1)

NAME

       dns_tree -- command-line frontend to dig

SYNOPSIS

       dns_tree [-f]  [-v]  [-d]  [-t TYPE]  [-m MATCH] DNS_domain

DESCRIPTION

       This manual page documents briefly the dns_tree command.

       This manual page was written for the Debian distribution because the original program does not have a manual page.

       dns_tree  is  a program that works as a front-end to dig. Given a specific domain dns_tree will make several dig     invocations to fetch a
       zone and it will format the output in in a somewhat sensible hierarchical style (a tree).

       Information extracted from the DNS relies on being possible to fetch a zone through a zone transfer. If the DNS servers for  the  requested
       domain do not allow file transfers dns_tree     will not be able to obtain information from the zone.

       All  data  obtain  is  cached in ~/.DNS_BROWSE with an approximation of the usual DNS caching rules.  Remove all files in that directory to
       prematurely flush the cache.

OPTIONS

       A summary of options is included below.

       -t TYPE	 Show only records of TYPE. This argument can be repeated to indicate multiple types. Use the "all" type to print  all	the  known
		 types.

       -m MATCH  Show only records in which the first component matches the PERL regexpt MATCH.

       -h	 Show summary of options.

       -v	 Enable verbose mode. All DNS requests are printed in the standard error.

       -d	 Enable debug output. Presents internal information of the program

       -f	 Override warnings (force).

SEE ALSO

       dig (1), dns_browse (1), perlrequick (1).

AUTHOR

       This  manual page was written by Javier Fernandez-Sanguino jfs@debian.org for the Debian system (and may be used by others).  Permission is
       granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version pub-
       lished by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

																     dns_browse(1)