tldr/pages/common/dig.md
2017-01-12 09:31:14 +05:30

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Markdown

# 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}}`