tldr/pages/common/dig.md

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dig

DNS lookup utility. More information: https://manned.org/dig.

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

dig +short {{example.com}}

  • Get a detailed answer for a given domain (A records):

dig +noall +answer {{example.com}}

  • Query a specific DNS record type associated with a given domain name:

dig +short {{example.com}} {{A|MX|TXT|CNAME|NS}}

  • Specify an alternate DNS server to query:

dig @{{8.8.8.8}} {{example.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 {{example.com}}

  • Perform iterative queries and display the entire trace path to resolve a domain name:

dig +trace {{example.com}}

  • Query a DNS server over a non-standard [p]ort using the TCP protocol:

dig +tcp -p {{port}} @{{dns_server_ip}} {{example.com}}