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Address Record

Maps a domain name to an IPv4 address

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About

The A (Address) record is the most fundamental DNS record type. It maps a domain name directly to a 32-bit IPv4 address, allowing browsers and other clients to find the server hosting a website or service. When you type a domain name in your browser, the DNS resolver queries for the A record to find the IP address to connect to.

A records are essential for any domain that needs to be accessible via IPv4. Most domains have at least one A record pointing to their web server. Large websites often have multiple A records for load balancing and redundancy.

Format & Example

Record Format
domain.com. IN A 192.0.2.1
Example
example.com. 300 IN A 93.184.216.34

This record maps example.com to the IPv4 address 93.184.216.34 with a TTL of 300 seconds (5 minutes).

Common Uses

  • •Pointing a domain to a web server
  • •Load balancing across multiple servers (multiple A records)
  • •Subdomain routing (e.g., api.example.com, www.example.com)
  • •Failover configurations with multiple IP addresses

Best Practices & Tips

  • •Use a reasonable TTL (300-3600 seconds) to balance between quick updates and reduced DNS queries
  • •Consider using multiple A records for redundancy
  • •For IPv6 support, also add AAAA records
  • •Use CNAME records instead if you want to point to another domain

Related Record Types

AAAACNAMENS

Related Tools

Propagation
Check A record globally
Reverse DNS
Find hostname for IP
AAAA Record