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Check IPv6 support for your network or website and get detailed connectivity and DNS resolution diagnostic reports.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
This checker accepts a domain or URL, extracts its hostname, and looks for IPv6 AAAA records. RFC 3596 defines an AAAA record as holding an IPv6 address; a query returns records associated with the queried domain. When an address is returned, the result reports support and displays the first address in the answer.
“Supported” here means only that an IPv6 address record was found for that hostname. A root domain and a subdomain such as www are separate DNS names and may return different answers. Check the hostname visitors actually use.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Type a hostname such as example.com. A full URL is reduced to its hostname; its path and page content are not checked.
Run the test and wait for its result. An empty or unrecognized input, or an unsuccessful lookup, may produce an error or a negative status.
A positive result shows one IPv6 address from the returned list, not every address. Check each relevant hostname separately.
If the browser address is www.example.com/articles, this checks www.example.com, not the article path and not automatically example.com.
Use cases
See how the tool fits into real work and everyday tasks.
A site administrator can check whether the intended host returns an IPv6 record, then run separate network and service tests.
When a colleague reports a connection problem, this lookup can establish whether an AAAA answer is returned. Record the hostname and result for the next troubleshooting step.
Q&A
Find concise answers to common questions and confusing cases.
Not necessarily. A failed lookup and a response with no address both appear as a negative result. Confirm the DNS response independently before changing configuration.
The result shows the first returned address only; it does not list every AAAA record.
Yes, when both names are used. They are distinct hostnames and can have different records.
No. A DNS record does not test your device’s IPv6 connectivity, routing, firewall, or the target service.
Notes
Review scope, result limitations, and important precautions before use.
This page checks for an AAAA DNS answer; it does not send a ping or test ICMP, HTTP, HTTPS, routing, or your device’s IPv6 connectivity. A returned record does not guarantee the site is reachable over IPv6. A negative result can reflect a failed lookup rather than confirmed absence. Check DNS, client connectivity, and the target service as separate steps.
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