What is a DNS A Record? | Definition, Function & Example
A DNS A Record (Address Record) is a key element of the Domain Name System (DNS) that maps a domain name (e.g., example.com) to a specific IPv4 address (e.g., 192.0.2.1). This mapping allows browsers and internet services to locate the correct server hosting the website or resource.
Key Functions of a DNS A Record:
- Directs web traffic: Routes users to the correct IP address when they enter a domain name.
- Supports website accessibility: Ensures domain names resolve to active web servers.
- Enables multiple IPs: Supports load balancing and redundancy by pointing to multiple addresses.
Example of a DNS A Record:
example.com. IN A 192.0.2.1Best Practices for DNS A Records:
- Keep A records updated if your server’s IP address changes.
- Use a reputable DNS provider with global infrastructure.
- Monitor DNS to detect downtime or propagation delays.