Random MAC Address Generator

Options

Generate demo random MAC addresses (optional locally-administered / unicast bits). Sample data — not real NIC assignments.

Count Separator Set locally administered bit (U/L=1) Clear multicast bit (I/G=0)

Demo / sample data only — not real people, phone numbers, MAC/IP assignments, or personally identifiable information. Do not use for fraud, spam, or impersonation.

Uses your browser’s Web Crypto CSPRNG (crypto.getRandomValues) — strong PRNG for games, picks, and development. Not atmospheric true-random like RANDOM.ORG.

MAC addresses

FAQ

Can I use these on a real network?

No — treat them as placeholders. Setting U/L helps mark them as locally administered demos.