dig

DNS lookup utility.

$ dig

Domain nameQuery type

A (IPv4)

AAAA (IPv6)

MX (Mail)

CNAME (Alias)

NS (Nameserver)

TXT (Text)

SOA (Authority)

ANY

Short output (+short)Show only answer (+noall +answer)Trace DNS path (+trace)

Examples

# Basic A record lookup
dig example.com

# MX records
dig example.com MX

# Short answer only
dig example.com +short

# Trace DNS resolution
dig example.com +trace

# Query specific DNS server
dig @8.8.8.8 example.com A

# Reverse lookup
dig -x 8.8.8.8