Enter any domain to see whether it supports IPv6. The tool checks AAAA records for website, mail servers, and nameservers in one run.
Website + mail + nameserver IPv6 check
Lists every IPv4 and IPv6 address
Free, no signup, no logging
Built by Chilly Proxy networking team.
Updated April 26, 2026.
Website IPv6: -
Mail IPv6: -
Nameserver IPv6: -
A records (IPv4)
-
AAAA records (IPv6)
-
MX hosts with IPv6
-
NS hosts with IPv6
-
IPv4 address space has been exhausted for years, and modern networks are moving toward IPv6-first infrastructure. If your domain is not IPv6-ready, users on IPv6-heavy mobile carriers and enterprise networks may face slower routing or intermittent reachability through translation layers.
If this tool returns at least one AAAA record, your domain supports IPv6 at the website layer. For a complete picture, mail servers (MX) and nameservers (NS) must also publish IPv6 where required. That is why this page checks all three layers, not just the root hostname.
Common causes include missing AAAA records, IPv6 disabled at CDN level, hosting plans that are still IPv4-only, and DNS propagation delay after changes. In real deployments, teams often enable IPv6 for website traffic but forget MX or NS dependencies, which creates partial readiness instead of full IPv6 coverage.
IPv6 improves compatibility with modern networks, reduces dependence on NAT-heavy routing, and future-proofs infrastructure for APIs, SaaS platforms, and automation systems. As IPv4 gets more expensive and scarce, IPv6 support becomes a practical technical and cost decision, not just a networking preference.
Enter a domain, run the check, and read the status summary. If website, MX, and NS all show IPv6 support where expected, your configuration is in a healthy state for dual-stack traffic. If not, start by fixing AAAA records and CDN/hosting IPv6 settings.
Developers validating API and web endpoint IPv6 readiness before release.
DevOps and SRE teams auditing dual-stack coverage across environments.
System admins checking MX and NS IPv6 support for complete DNS health.
Proxy users confirming target sites are IPv6 reachable before buying plans.
Chilly Proxy offers premium residential and datacenter IPv6 plans with stable routing for scraping, account operations, and scale testing. If your use case depends on regional access, anti-detection consistency, or high-throughput jobs, clean IPv6 inventory with reliable uptime can noticeably improve success rate and reduce retries.
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What is an AAAA record?
AAAA maps a domain to an IPv6 address, similar to A records for IPv4. If AAAA is missing, IPv6-only paths cannot reach the service directly.
How to know if a site supports IPv6?
If at least one AAAA record is returned for the domain, the website layer supports IPv6. This checker also tests mail and nameserver hosts for full-stack readiness.
Why does mail fail even when website IPv6 works?
Mail depends on MX hosts. If MX targets do not publish AAAA, email systems may remain IPv4-only even when the main website is dual-stack.
Do you store checked domains?
No signup is required and this page is designed for quick diagnostics. You can run checks repeatedly without account setup.