From Wsms

Note: This page should be titled dig (all lowercase). It is Dig due to technical limitations of Mediawiki.

dig sends queries to the dns system.

Common Usage

Find the ip address for a host:

ggeller@ws05 ~]$ dig mary-and-joe.com

; <<>> DiG 9.3.4 <<>> mary-and-joe.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50466
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;mary-and-joe.com.              IN      A

;; ANSWER SECTION:
mary-and-joe.com.       3600    IN      A       208.109.14.136

;; AUTHORITY SECTION:
mary-and-joe.com.       3600    IN      NS      ns3.secureserver.net.
mary-and-joe.com.       3600    IN      NS      ns4.secureserver.net.

;; Query time: 140 msec
;; SERVER: 10.105.1.254#53(10.105.1.254)
;; WHEN: Mon Apr 23 08:09:27 2007
;; MSG SIZE  rcvd: 102

Find the mail server for a domain:

[ggeller@ws05 ~]$ dig -t MX mary-and-joe.com

; <<>> DiG 9.3.4 <<>> -t MX mary-and-joe.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51151
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;mary-and-joe.com.              IN      MX

;; ANSWER SECTION:
mary-and-joe.com.       3584    IN      MX      10 mailstore1.secureserver.net.
mary-and-joe.com.       3584    IN      MX      0 smtp.secureserver.net.

;; ADDITIONAL SECTION:
mailstore1.secureserver.net. 3584 IN    A       64.202.166.11

;; Query time: 6 msec
;; SERVER: 10.105.1.254#53(10.105.1.254)
;; WHEN: Mon Apr 23 08:09:46 2007
;; MSG SIZE  rcvd: 114

see also

man dig
man nslookup
Files/Etc/Resolv.conf