Free IPv6 Compatibility Checker & AAAA Record Lookup
IPv6 is the latest version of the Internet Protocol, designed to replace IPv4 and solve address exhaustion. Domains that support both IPv4 (A records) and IPv6 (AAAA records) are considered dual-stack ready, ensuring maximum accessibility and future-proofing your domain. Our free IPv6 checker verifies AAAA record existence, tests dual-stack configuration, and provides recommendations for IPv6 adoption.
What This Tool Checks
Comprehensive analysis powered by Vysiro's scanning engines
AAAA record existence verification
Dual-stack readiness assessment (A + AAAA)
IPv6 address format validation
Multiple AAAA record detection
Nameserver IPv6 support check
MX server IPv6 readiness
CDN IPv6 compatibility analysis
Clear IPv6 adoption recommendations
How It Works
Get results in seconds with our automated scanning process
Enter your domain name in the scanner above
We query DNS for AAAA (IPv6) and A (IPv4) records
Our engine checks nameserver and MX IPv6 support
We assess dual-stack readiness across your domain
You receive a detailed IPv6 compatibility report
Follow our recommendations to enable full IPv6 support
Frequently Asked Questions
Everything you need to know about ipv6 compatibility checker
What is IPv6 and why does it matter?
IPv6 is the successor to IPv4, using 128-bit addresses instead of 32-bit, providing a virtually unlimited address space. As IPv4 addresses run out, IPv6 adoption becomes critical. Many mobile networks and ISPs already prefer IPv6, so supporting it ensures your website remains accessible to all users.
What is an AAAA record?
An AAAA record (also called a quad-A record) is a DNS record that maps a domain name to an IPv6 address, just like an A record maps to an IPv4 address. To support IPv6, your domain needs at least one AAAA record pointing to an IPv6-enabled server.
What is dual-stack?
Dual-stack means your server supports both IPv4 and IPv6 simultaneously. This is the recommended approach during the IPv6 transition, as it ensures your website is reachable by users on both IPv4-only and IPv6-only networks. Most modern hosting providers and CDNs support dual-stack.
Does my website need IPv6?
While not strictly required today, IPv6 support is increasingly important. Major networks like T-Mobile, Comcast, and many international ISPs route traffic over IPv6 by default. Google reports over 45% of its traffic comes via IPv6. Adding AAAA records is a low-effort, high-impact improvement.
How do I add IPv6 support to my domain?
First, ensure your hosting provider or CDN supports IPv6. Then add AAAA records in your DNS settings pointing to the IPv6 address provided by your host. If you use Cloudflare, Vercel, or AWS CloudFront, IPv6 is typically enabled by default.
Will enabling IPv6 break my website?
No. Adding AAAA records alongside existing A records creates a dual-stack configuration. IPv6-capable clients will use the AAAA record, while IPv4-only clients continue using the A record. There is no disruption to existing IPv4 connectivity.
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