Generate random MAC addresses in any format, with optional vendor prefix.
How to use MAC Address Generator
Choose how many addresses you need and the format.
Optionally enter a vendor prefix, and choose locally administered, multicast and uppercase options.
Click Generate and copy the list.
Worked example
For five virtual machines on one network, generate five locally administered addresses so they cannot clash with real hardware addresses.
What does locally administered mean?
The second-lowest bit of the first byte marks an address as assigned locally rather than by a manufacturer, so it never collides with real vendor addresses.
Are the addresses random?
Yes. They use your browser’s cryptographic random number generator.
Put this guide into practice
MAC Address Generator — Generate random MAC addresses in any format, with optional vendor prefix.