The most widely used DNS record types, and their purpose are as follows:
- A - specifies IP addresses corresponding to your domain and its subdomains;
- MX - specifies where the emails for your domain should be delivered;
- CNAME - specifies redirects from your domain's subdomains to other domains / subdomains;
- TXT - these records are used to store text-based information related to your domain. One of their most common uses is for SPF data. SPF, or Sender Policy Framework, is an attempt to control forged e-mail.
All your domain's DNS records are stored in its DNS zone. Where its active DNS zone is located is determined by the domain's name servers. In turn, a domain's name servers are set with the domain's registrar.