Random or vendor-prefixed

MAC Address Generator

Generate random or vendor-prefixed MAC addresses for virtual machines, test fixtures and network hardware testing.

5

How it works

1

Pick a format

Choose colon, hyphen, Cisco-style dotted, or no separator to match what you're pasting it into.

2

Choose a source

Generate a fully random address or start from a well-known vendor OUI prefix.

3

Generate and copy

Create up to 20 addresses at once, then copy any single one or the whole list.

FAQ

What is a MAC address?

A Media Access Control address is a 48-bit identifier assigned to a network interface. It's usually written as six pairs of hex digits, and the first three bytes (the OUI) traditionally identify the hardware vendor.

Why are random addresses marked "locally administered"?

This tool sets the locally-administered bit on fully random addresses, which signals the MAC was assigned locally rather than manufactured, so it won't collide with a real vendor-issued address.

What are these addresses used for?

Common uses include configuring virtual machine network adapters, populating test fixtures and inventory systems, and network hardware or driver testing where a unique but non-production MAC is needed.

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