Quick and easy MAC Address Lookups! Mac Vendor allows you to find mac and vendor informations for a network MAC address without internet. 1. NO INTERNET NEEDED 2. Contains 18661 address MAC records 3. Search Mac Address by vendor name 4. Search vendor by Mac Address -----------= The standard (IEEE 802) format for printing MAC-48 addresses in human-friendly form is six groups of two hexadecimal digits. The first three octets identify the organization (vendor) that issued the identifier and are known as the Organizationally Unique Identifier (OUI).