MAC Address Generator
Generate random MAC addresses for labs and testing — pure random hex, no OUI or unicast-bit management. Fill virtual networks credibly — local generation, free, no signup.
How to Use the MAC Address Generator
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Frequently Asked Questions
Unicast vs multicast bit?
No bit management here — the tool fills random hex over your prefix (padded to 12 hex digits), so multicast/local bits are whatever chance gives. Default OUI prefix is 00:50:56 (VMware); quantity comes in 5, 10, or 20 with colon, hyphen, or no delimiter.
Spoofing legality?
Lab and own-network testing fine; impersonating others to bypass controls violates policy and often law. Test your own gear.
Format options?
Colon, hyphen, or bare formats with an uppercase toggle — no Cisco dot format. Case options match vendor conventions.
Are generated values uploaded?
No — generation runs locally in your browser. Nothing leaves your device.
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Last updated October 2026