Purpose. This tool lets you paste Microsoft product keys (e.g., for Windows, Office, Visio, or Project) and quickly check what they belong to — such as the product family, product name, edition, and channel — and whether the key format looks valid.
- Easy to use: paste one or more keys, click Start, get results.
- Informational results: displays product family, product name, edition, channel and (where applicable) remaining MAK activations.
- Privacy-first: keys are processed only for the purpose of this check. We do not display server details; operational logs use anonymized key prefixes.
- No activation: this is not a licensing or activation service and does not contact external vendors for activation. Results are for guidance only.
Note: If a key cannot be classified, it may be invalid, unsupported, or outside the available datasets. This tool does not confirm purchase entitlement.