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$ curl repovive.com/roadmaps/network-design/dhcp-and-dns/dns-a-and-aaaa-records

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$ curl repovive.com/roadmaps/network-design/dhcp-and-dns/dns-a-and-aaaa-records

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DNS A and AAAA Records - DHCP and DNS | Network Design | Repovive

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Network Design26 sections · 911 units44h total

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DNS A and AAAA Records

Address mapping

An A record maps a domain name to an IPv4 address. When you query www.example.com, the authoritative server returns an A record like:

www.example.com.  300  IN  A  93.184.216.34

The $300$ is the TTL (time-to-live) in seconds.

An AAAA record (quad-A) does the same for IPv6:

www.example.com.  300  IN  AAAA  2606:2800:220:1:248:1893:25c8:1946

Most domains have both for dual-stack compatibility.