What Is a MAC Address?

March 13, 2023

A MAC (Media Access Control) address is a unique identifier assigned to a network interface controller (NIC) that ensures data reaches the intended recipient. Most MAC addresses are 6-byte (48-bit) strings of 12 hexadecimal digits separated by colons or dashes. The first three bytes identify the manufacturer of the NIC; the second three bytes are unique to the specific NIC.

Anastazija is an experienced content writer with knowledge and passion for cloud computing, information technology, and online security. At phoenixNAP, she focuses on answering burning questions about ensuring data robustness and security for all participants in the digital landscape.