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Special Forums IP Networking DNS and Authoritative Servers Post 302877191 by Lost in Cyberia on Thursday 28th of November 2013 08:28:29 PM
Old 11-28-2013
DNS and Authoritative Servers

Hey everyone, I've noticed that when I do a dig command, I don't get any authoritative records back. For example a dig to cnn.com just yields:

Code:
;; QUESTION SECTION:
;cnn.com.            IN    A

;; ANSWER SECTION:
cnn.com.        300    IN    A    157.166.226.25
cnn.com.        300    IN    A    157.166.226.26


At first I thought it was because my caching server already had it, but I tried a multitude of sites, and none return any authoritative records. How is this?
Even with the +authority switch it doesn't return anything. Is it possible the ISP can block this ? That was my first thought, or is there something else at play?

Last edited by Scott; 11-29-2013 at 05:39 PM.. Reason: Code tags
 

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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)
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