Key Takeaways

DNS AAAA records map domain names to IPv6 addresses, directing browsers to the correct webpages.
IPv6 is an advanced version of Internet Protocol, offering a larger address space compared to IPv4.
Multiple AAAA records can coexist with A records for redundancy and better website accessibility.
Adding or updating DNS AAAA records is a straightforward process through your domain’s Account Manager.
Using AAAA records is essential for domains transitioning to IPv6 or for newly created domains to ensure proper address mapping.

There are 8 most common types of DNS records, and this blog focuses on knowing about DNS AAAA records. It’s a type of DNS record that helps browsers to take surfers to the right webpage on the internet. AAAA records are almost similar to A records; the former is based on IPv6 and the latter on IPv4.

Read till the end to know why AAAA records are important for converting domain names to IP addresses and how to add one.

What is a DNS AAAA Record?

DNS AAAA record or quad A record is a type of DNS record that maps a domain or subdomain to IPv6 (IP address version 6). This directs the browser to land on the right website when someone enters a domain or subdomain in the address bar.

AAAA record is similar to the A record, except that it lets you specify the IPv6 address of a server instead of IPv4. At present, DNS AAAA records aren’t as popular as A records; however, their usage is soaring rapidly as the adoption of IPv6 is expanding.

Whereas, with A records, you can use several DNS AAAA records for the same domain for redundancy. Several names can translate to the same address on the internet. In such scenarios, each would demand its own AAAA record directing to the same IP address.

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When are DNS AAAA Records Used?

What is a DNS AAAA record’s function? A DNS AAAA record lets client devices know the IP address for a domain to reach a specific website. It’s only used if a domain is based on an IPv6 address in addition to an IPv4 address.

Although most domains are based on IPv4 addresses and A records, not all domains are aligned to IPv6 addresses. Moreover, not all your visitors’ devices are configured to use IPv6.

Domain owners choose to add it due to various reasons. It’s required when you create or purchase a new domain and have to direct it to your website’s IP address.

It’s also needed to shift your website from one hosting company to another. This is because DNS settings have to be updated as per that.

Another purpose of adding AAAA records is email security. SPF, an email authentication protocol, adds a list of IP addresses permitted to send emails using a specific domain on DNS only. If your domain uses SPF protocol, you must use an SPF checker for regular surveillance.

However, the process of adding AAAA records is easy and quick. Read till the end to know how it’s done.

Benefits of Using DNS AAAA Records

DNS AAAA records play a critical role in enabling IPv6 connectivity on the Internet. While the traditional IPv4 system has served the web for decades, the increasing demand for unique IP addresses, driven by the growth of connected devices, has made IPv6 adoption essential. AAAA records map a domain name to a 128-bit IPv6 address, ensuring that websites and services are accessible over modern networks.

Implementing these records brings several advantages for performance, scalability, and long-term compatibility:

Supports IPv6 Adoption and Larger Address Space: IPv4’s 32-bit address system supports roughly 4.3 billion unique addresses, which is no longer sufficient in today’s connected world. IPv6, on the other hand, uses 128-bit addresses, offering an almost limitless supply of unique IPs. By setting up AAAA records, organizations actively support the global transition to IPv6, ensuring their services remain reachable as the internet evolves.
Enhances Performance on IPv6-Enabled Networks and Devices: For users and devices already on IPv6-capable networks, AAAA records can enable more direct and efficient routing. In many cases, IPv6 networks can reduce the number of hops between a client and server, leading to faster load times, lower latency, and a smoother browsing experience.
Reduces Dependency on IPv4 NAT (Network Address Translation): IPv4 address shortages have forced many networks to rely on NAT, which can introduce complexity, overhead, and potential connection bottlenecks. With AAAA records and native IPv6 addressing, each device can have a unique, globally routable IP address, simplifying connectivity and reducing reliance on NAT workarounds.
Provides Future-Proofing for Domains: IPv6 adoption continues to grow, and major ISPs, mobile networks, and cloud providers are already prioritizing IPv6 compatibility. By implementing AAAA records now, domain owners prepare their infrastructure for the inevitable shift, avoiding rushed transitions and ensuring uninterrupted access as IPv4 resources become scarcer.
Improves Connectivity for Mobile and IoT Devices: Many mobile networks and IoT ecosystems are already optimized for IPv6. AAAA records allow these devices to connect directly using their native IPv6 capabilities, which can improve stability, reduce latency, and lower the risk of connection issues compared to relying solely on IPv4.

What is DNS AAAA Record Format?

A usual DNS AAAA record looks like the following in standard BIND format. The BIND format is the zone file format adopted by DNS server software. It’s defined in RFC 1035.

$ORIGIN domain.com.

@ 3600 IN AAAA 2701:fe9a:ed9e:1ee6

* 3600 IN AAAA 1337:226c:9bee:16f3

ftp 86400 IN AAAA c343:87ab:1661:638b

Here’s the anatomy of a typical AAAA record.

HOST LABEL	TTL	RECORD CLASS	RECORD TYPE	RECORD DATA
domain.com	3600	IN	AAAA	2701:fe9a:ed9e:1ee6

Host label: It tells the hostname of a record and if it’ll be appended to the label. Fully-qualified hostnames are unable to append the origin.
TTL: TTL stands for Time-to-Live in seconds, the time for which a record survives.
Record class: There are 3 primary classes of DNS records:
- IN (Internet)- This is default and is generally what the internet uses.
- CH (Chaosnet)- This is used for querying DNS server versions.
- HS (Hesiod)- This record class type uses DNS functionality to access information databases completely.
Record type: All record format consists of this field for generalization.
Record data: It’s the data within a DNS answer that contains the IPv6 address.

How to Add or Update DNS AAAA Records?

The specific steps to add or update DNS AAAA records can vary as per the platform. However, we’ve shared the basic steps that can be performed via your Account Manager:

Log In to your Account Manager.
Go to Domains on the Menu Bar.
Select the Domain Name that you’ve to add or update. If you’ve just one domain, the platform will automatically redirect you.
Find the DNS Settings section and choose the Hamburger Menu to select Add Record.
If you wish to update an existing record, hover your cursor over the AAAA Record and click on Modify.
Select AAAA Record followed by clicking Add button.
Enter the Sub Domain if necessary, followed by the AAAA Record (IPv6 Address) in the corresponding fields.
Click Update.

Conclusion

DNS AAAA records are essential for directing domains or subdomains to the correct IPv6 addresses, ensuring that browsers can connect users to the right websites. They can work alongside traditional A records to support both IPv4 and IPv6 traffic, making them especially important when buying a new domain, changing hosting providers, or preparing for future internet standards.

To ensure your AAAA records are configured correctly, you can quickly verify them using our AAAA record lookup tool on the PowerDMARC platform. The process is instant, accurate, and highlights any configuration errors so you can troubleshoot issues faster. Start optimizing your domain’s IPv6 readiness today by checking your AAAA records with PowerDMARC.

Frequently Asked Questions (FAQs)

Can I have both A and AAAA records for the same domain?

Yes. You can configure both A (IPv4) and AAAA (IPv6) records for the same domain. This setup allows your website to be accessible to users on both IPv4- and IPv6-enabled networks. When a browser or device requests your site, it will automatically choose the appropriate protocol based on network availability and performance.

Do AAAA records affect website loading speed?

Indirectly, yes. Especially for users on IPv6-enabled networks. AAAA records enable direct IPv6 connections, which can sometimes result in fewer network hops, lower latency, and faster page load times. However, the actual performance impact depends on factors like your hosting provider’s IPv6 infrastructure, network routing, and the user’s connection quality.

About
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Ahona Rudra

Domain & Email Security Expert at PowerDMARC

Ahona is the Marketing Manager at PowerDMARC, with 5+ years of experience in writing about cybersecurity topics, specializing in domain and email security. Ahona holds a post-graduation degree in Journalism and Communications, solidifying her career in the security sector since 2019.

DNS AAAA Record: Benefits, Setup, and Use Cases