Are these valid MAC addresses?

They are syntactically valid; for test use, prefer locally-administered addresses so they will not clash with real hardware.

What is the locally-administered bit?

Setting the second-least-significant bit of the first octet marks an address as locally assigned rather than vendor-assigned.

MAC Address Generator

Generate random MAC addresses locally in your browser.

Count

Separator

UppercaseLocally administeredUnicast

Tip: for locally administered + unicast, the first octet has bits ..10 (common for virtual interfaces).

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About MAC Address Generator

Generate random MAC addresses in the format you need, with options for separators and locally-administered or multicast bits. Useful for testing, mocking devices, and lab setups.

How to use

Choose the format (colon, hyphen, or dot separated).
Select how many addresses to generate.
Copy the generated MAC addresses.

Frequently asked questions

Are these valid MAC addresses?: They are syntactically valid; for test use, prefer locally-administered addresses so they will not clash with real hardware.
What is the locally-administered bit?: Setting the second-least-significant bit of the first octet marks an address as locally assigned rather than vendor-assigned.