tldr/pages/common/dig.md

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dig

DNS Lookup utility.

  • Lookup the IP(s) associated with a hostname (A records):

dig +short {{hostname.com}}

  • Lookup the mail server associated with a given domain name (MX record):

dig +short {{hostname.com}} MX

  • Specify an alternate DNS server to query (8.8.8.8 is google's public DNS):

dig @8.8.8.8 {{hostname.com}}

  • Perform a reverse DNS lookup on an IP address (PTR record):

dig -x 8.8.8.8

  • Find authoritative name servers for the zone and display SOA records:

dig +nssearch {{hostname.com}}