Maps a hostname to an IPv6 address in DNS; IPv4 addresses use A records.
Also called IPv6 host record.
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Each book explains AAAA in context, with comparison tables and the common traps.
Terms in this definition
- MAPS
Short for Microsoft Active Protection Service. It gives Microsoft Defender Antivirus cloud verdicts on suspect files in seconds, and features like file indicators stop working if it is turned off or blocked.
- IPv6
Addressing based on 128 bits, available in Standard public IPs and dual-stack VNets. Public IPs for Azure Firewall and Bastion have to be IPv4.
- DNS
The system that turns names into addresses. In Azure, private endpoints depend on private DNS zones, which are queried through 168.63.129.16.
- IPv4
The 32-bit version of IP addressing. It remains the address format you will see most often in log data and threat indicators.
Related terms
- RCODE
Result code inside a DNS response. For vSphere 9.x, answering an AAAA query for an IPv4-only name must give RCODE 0 with nothing returned (per RFC 4074); a NXDOMAIN reply makes installs and upgrades fail.