IPv6 Connectivity Test is a browser tool that checks whether your internet connection and device fully support IPv6. It helps you identify your IPv4 and IPv6 status, detect issues like missing AAAA DNS records or broken IPv6-only paths, and see how well your ISP or network handles dual-stack connectivity.
Key Features
- Detects IPv6 support: whether your device & ISP provide IPv6 connectivity
- Shows whether you are using IPv4 only, IPv6 only, or dual-stack (both)
- Tests DNS for AAAA records and IPv6-ready nameservers
- Measures reachability and performance under IPv6 vs IPv4
- Offers diagnostic details if IPv6 is partially working or failing
Use Cases
| Scenario | Benefit |
|---|---|
| ISP / Network troubleshooting | See if your provider supports IPv6 or if there are issues like packet loss or DNS misconfiguration |
| Device configuration | Confirm whether your router, system, or browser is properly set up for IPv6 |
| Web / App developers | Ensure your services are accessible over IPv6 and test for compatibility issues |
| Home users curious about future of the internet | Understand readiness for IPv6-only services or websites |
| Corporate or Data Center Networks | Validate dual-stack deployment and readiness for IPv6 migrations |
How to Use
- Open the IPv6 Connectivity Test tool in your browser
- Run the test — it will check IPv4 & IPv6 paths, DNS, and server reachability
- Review results: see whether IPv6 is available, if both IPv4 & IPv6 are active (dual-stack), or if IPv6 is failing in some way
- If issues are found (e.g. no IPv6, DNS not resolving AAAA records), check router settings, ISP configuration, or firewall rules
- Rerun the test after any changes to validate improvements
Advantages
- Easy and fast way to check IPv6 readiness without needing special tools
- Helps detect partial issues (e.g. DNS misconfiguration, what parts of path support IPv6)
- All done in browser; no software install required
- Useful for both tech-savvy users and novices
FAQ
What is dual-stack?
It refers to having both IPv4 and IPv6 available on a connection; the system can use either depending on destination.
What is an AAAA DNS record?
It’s a DNS record type that maps a domain name to an IPv6 address. If this is absent, the domain can’t be accessed over IPv6.
Why does IPv6 sometimes seem slower or fail even if it’s enabled?
Possible causes include misconfigured DNS, firewalls blocking IPv6 traffic, or ISP tunneling approaches that add latency or instability.
Is this tool free?
Yes. IPv6 Connectivity Test is free to use and requires no registration.
Does this tool send my data to servers?
No. The test runs in your browser; diagnostic info is used for detecting connectivity and not stored beyond the session (unless you choose to share it manually).
Try It Now
Check your internet’s IPv6 readiness:
IPv6 Connectivity Test
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