What is DNS Record?

What is a DNS Record?

A DNS record is a configuration entry that tells the internet how a domain should resolve. Records decide which IP address serves a website, which mail server receives email, or which text value proves domain ownership.

Common DNS Record Types

• A record: Points a hostname to an IPv4 address
• AAAA record: Points a hostname to an IPv6 address
• CNAME: Makes one hostname an alias of another hostname
• MX: Defines the mail servers that receive email for the domain
• TXT: Stores SPF, DKIM, domain verification, and policy values
• NS: Lists the authoritative name servers for the zone

Each record has a TTL value. TTL tells resolvers how long they may cache the answer. Lowering TTL before a planned change can make the transition visible faster.

How Is It Managed?

DNS records are usually managed in a registrar panel, a DNS hosting provider, or an edge provider such as Cloudflare. Editing records in several places can be misleading; the authoritative source is the provider named by the domain’s active name servers.

Business Use

DNS records support website hosting, email delivery, SSL verification, marketing tools, and third-party SaaS integrations. Deleting the wrong MX record can stop email, while a bad CNAME can make a customer portal unreachable.

For that reason, record changes should be documented, previous values should be kept, and risky updates should be scheduled during low-traffic windows.