Types of DNS records

Address (A) record – This type of record is used to translate a domain name to a specific IPv4 address.
Address (AAAA) record – This type of record is used to translate a domain name to a specific IPv6 address.
Canonical name (CNAME) record – This type of record is used to specify a secondary name (commonly referred to as alias) for an existing A or AAAA record.
Mail Exchange (MX) record  – This type of record is used to direct the mail communications for specific domains on the Internet. The record includes a priority and mail exchange agent domain name (this references an existing A, AAAA, or CNAME).
Start of Authority (SOA) record – This type of record is typically configured with the creation of a zone and includes authoritative information about a specific domain name.
Name Server (NS) record – This delegates the authoritative name servers for a specific domain, this record is also typically configured with the creation of the zone (in simple configurations).