Random MAC Address Generator

Generate random MAC addresses for testing and network simulations.

Settings

Number to generate

Format

Letter case

Vendor prefix (OUI)

Ensure unicast (first octet even)

Generated MAC addresses

Choose your options and press Generate to create random MAC addresses.

Random MAC addresses are useful for network testing, lab setups and simulations. They are not meant to bypass access control or impersonate real devices.

Tool Introduction

This generator creates valid 48-bit MAC addresses for testing and network simulations. Choose how many to produce, the separator (colons, hyphens, dots, spaces or Cisco style), letter case, and optionally lock the first three octets to a real vendor prefix (OUI) so every address looks like it belongs to the same manufacturer.

The "unicast" option keeps the first octet even, which is how normal device addresses behave. Everything is generated locally in your browser - nothing leaves your machine.