Enter 10-digit MAK Code

Get complete address information for every MAK and BaseMAK number.

  • MAK (Melissa Address Key) is a persistent 10 digit number assigned to every address in the U.S., Canada & other countries.
  • BaseMAK is a persistent unique 10 digit number assigned to properties with secondary addresses (i.e. APT, STE, LOT, etc.).
  • Master Address Table (MAT) contains a list of every address in the U.S., Canada & many other countries. Learn more
Download Melissa's 2020 Data Quality & Enrichment Catalog New