Generate random MAC addresses, choose local or universal-style addressing, and control whether the first byte stays unicast-only.
Generated with secure browser randomness when available.
A MAC address uses six bytes. The generator fills those bytes randomly and then adjusts the lowest bits of the first byte to match your local and unicast settings.
The locally administered bit controls whether the address is vendor-style or local-style, while the multicast bit controls whether the address is unicast or group-oriented.
Many common example addresses are meant to represent single interfaces, so clearing the multicast bit keeps the address unicast-compatible.
It means the address is intended for local use rather than reflecting a globally assigned vendor identifier.
Yes. Turn off the unicast-only option and some results can keep the multicast bit set.
They are useful for fixtures, network UI tests, tutorials, and device-oriented mock data.
MAC addresses are six bytes long and are usually displayed as 12 hexadecimal characters.
Bit settings in the first octet influence whether the address is local or universal-style, and unicast or multicast.
Formatting separators change readability but not the logical address contents.
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