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dig makes DNS queries!
$ dig google.com
answers have 5 parts:
- query:
google.com - TTL
22 - clas:
IN(for “internet”, ignore this) - record type:
A - record value:
172.217.13.110
dig TYPE domain.com
this lets you choose which DNS record to query for!
types to try:
- NS
- MX
- TXT
- CNAME
- A (default)
dig @ 8.8.8.8 domain
(google DNS server)
dig@server lets you pick which DNS server to query. Useful when your system DNS is misbehaving :)
dig + trace domain
traces how the domain gets resolved, starting at the root nameservers.
if you just updated DNS, dig + trace should show the new record.
dig -x 172.217.13.174
makes a reverse DNS query -find which domain resolves to an IP! Same as dig ptr 172.217.13.174.in.addr.arpa
dig +short domain
Usually dig pints lots of output! With +short it just prints the DNS record.