Friday, November 13, 2015

Dig Commands


Look up A record example.com as seen by 8.8.8.8 nameserver
dig @8.8.8.8 exampe.com

Show the MX record for a yahoo domain
dig yahoo.com MX

Show the TTL for a given domain
dig imagescape.com TTL

Show the TXT record for an yahoo domain
dig yahoo.com TXT

Show only the answer
dig yahoo.com +nocomments +noquestion +noauthority +noadditional +nostats

All Records
dig @8.8.8.8 imagescape.com ANY +noall +answer

Reverse Lookup
dig -x 198.178.132.10

Nice output that looks like the domain record
dig @ns.imagescape.com imagescape.com any +multiline +noall +answer

Find the authoritative nameserver for a domain:
dig -t ns imagescape.com +short

Find the SOA of the domain:
dig joejasinski.com soa +noall +answer


dig @ns1.linode.com joejasinski.com soa

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @ns1.linode.com joejasinski.com soa
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- 64217="" id:="" noerror="" opcode:="" p="" query="" status:="">;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 11
;; WARNING: recursion requested but not available

;; ANSWER SECTION:
joejasinski.com. 86400 IN SOA ns1.linode.com. joe\.jasinski.gmail.com. 2014092859 14400 14400 1209600 86400


The presence "aa" indicates if the nameserver is the authoritative server.
The "2014092859" is the serial


Download a zone file (zone transfer):
dig axfr domain.com


Common Options:
  +short  = show only the results
  +[no]comments = show/hide the comments
  +[no]question = show/hide the question section
  +[no]authority = show/hide the authority section
  +[no]stats = show/hide the stats section
  +[no]answer = show/hide the answer section
  +[no]all = show/hide everything


https://neverendingsecurity.wordpress.com/2015/04/13/dig-commands-cheatsheet/
https://www.madboa.com/geek/dig/


Nice articles:

Commands
http://anouar.adlani.com/2011/12/useful-dig-command-to-troubleshot-your-domains.html

Create DNS Slave
http://www.microhowto.info/howto/configure_bind_as_a_slave_dns_server.html



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