# 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}}`