DNS A Records

An A record maps a Fully Qualified Domain Name (FQDN) to the physical IP address of the computer hosting that domain. Internet traffic uses the A record to find the computer hosting your domain's DNS settings. The value of an A record is always an IP address, and multiple A records can be configured for one domain name.

A records only hold IPv4 addresses. If a website has an IPv6 address, it will instead use an DNS AAAA Record

Here is an example of an A record:

example.com	record type:	value:	TTL
@	A	192.0.2.1	14400

The "@" symbol in this example indicates that this is a record for the root domain, and the "14400" value is the TTL (time to live), listed in seconds. The default TTL for A records is 14,400 seconds. This means that if an A record gets updated, it takes 240 minutes (14,400 seconds) to take effect.