How to use IPv6 address inspector
Expand and compress an IPv6 address and identify common address scopes. The check runs when you submit the form. Its inputs are processed in this browser.
How the check works
The parser validates eight 16-bit groups, one optional compression marker and an optional embedded IPv4 address. It returns a canonical lowercase representation.
The Overview tab explains the findings. Measured data lets you search individual fields and values, while JSON report shows the complete export. Export JSON to retain a baseline, or print the findings for your own records. Review the report before sharing it: browser characteristics, token claims, and file names can reveal information about your setup.
Read the result in context
Scope labels distinguish unspecified, loopback, link-local, unique-local, multicast and documentation addresses. IPv4-mapped addresses are identified separately.
Understand the limits
A scope label does not prove an address is reachable or allocated. Zone identifiers and CIDR suffixes are intentionally excluded.
Common questions
Where is the input processed?
In this browser tab. This tool does not submit its input to the site server or a third-party service.
What should I keep with a result?
Record the selected options, browser and time. Review exported values before sharing them. Generated passwords, tokens and HMAC secret keys are excluded from report exports.