Last updated on: 2018-10-23
Authored by: Rackspace Support
Domain Name Systems (DNS) use different record types for different purposes. This article helps you determine which record type you should use when creating a DNS record in the Cloud Control Panel.
Use an A or AAAA record to point to an IP address. In simple cases, you might have only a single A or AAAA record as your base record pointing to a single IP address. However, often you have several A or AAAA records that point to different IP addresses.
Note: If you have a base record (not required),
it must be an A or AAAA record. For example, you could have
www.mydomain.com as an A record that points to
www.domain.com might be a CName record that points to
www.myotherimportantdomain.com. Likewise, you might have a
mail.domain.com record pointing to
Type A is an IPv4 address record.
Type AAAA is an IPv6 Address record. Use this record type only if your server has an IPv6 address to which to point.
Use a CName record to point to another record.
Use an MX record for mail delivery. For example, creating an MX record for domain.com would allow you to set up an email address like
Use an NS record to delegate an authoritative DNS server for a domain or subdomain.
Use an SLR to designate a host and port for certain services, such as a Lightweight Directory Access Protocol (LDAP), for a domain.
Use a TXT record to store data types such as Sender Policy Framework (SPF) or DomainKeys Identified Mail (DKIM) records.
https://en.wikipedia.org/wiki/List_of_DNS_record_types: This Wikipedia page provides a listing of resource records stored in the zone files of the DNS.
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