Networking

Linux dig command

Query DNS records and inspect the response returned by a DNS server.

Availability: Common Linux commands; shell built-ins and external implementations may differ by distribution.中文

Syntax

dig [@SERVER] NAME [TYPE] [QUERY-OPTIONS]

Examples

Query IPv4 address records and print concise results.

dig example.com A +short

Request the reverse DNS name for an address.

dig -x 192.0.2.10

Parameters, options and clauses

Option / clause	Description
`@SERVER`	Send the query to a chosen DNS server.
`A / AAAA / MX / NS`	Query common record types.
`+short`	Print a concise answer section.
`+trace`	Follow delegation from the DNS root.
`+noall +answer`	Show only answer records.
`-x ADDRESS`	Perform a reverse lookup for an address.

Safety note

Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.

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