## Overview
The Melissa Keys Lookup Cloud API allows you to search for the equivalent addresses associated with Melissa Address Keys (MAKs), which are unique identifiers generated by our address verification APIs.
Melissa Keys Lookup can be used to:
- Perform a reverse lookup against a MAK number to retrieve the equivalent address.
- Index unique addresses across all countries using MAK numbers.
- Resolve keys generated by services such as Global Address Web Service, Personator, and Smart Mover.

**Documentation**
- [Melissa Keys Lookup Documentation](https://docs.melissa.com/cloud-api/melissa-keys-lookup/melissa-keys-lookup-index.html)

**Useful Resources**
- [GitHub](https://github.com/MelissaData/MelissaCloudAPI-OpenAPI-Specifications)
- [Release Notes](https://releasenotes.melissa.com/cloud-api/melissa-keys-lookup/)
- [Result Codes](https://docs.melissa.com/cloud-api/melissa-keys-lookup/result-codes.html)

**Support Center**
[https://www.melissa.com/company/product-support](https://www.melissa.com/company/product-support)