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Free random MAC address generator for network testing and development. Generate valid MAC addresses with custom OUI prefixes for device simulation.
Generates random MAC addresses with configurable options including the universal/local (U/L) bit, unicast/multicast (U/M) bit, separator style, and batch count. Displays generated addresses in a clickable grid with individual and bulk copy support.
Developers and network engineers often need random MAC addresses for testing network software, configuring virtual machines, or setting up isolated lab environments without exposing real hardware addresses.
Developers writing network automation scripts, QA engineers testing MAC-based authentication, VM administrators configuring virtual NICs, and students learning about MAC address structure.
Set the number of MAC addresses to generate (1-100)
Choose a separator style: colon, dash, dot, or none
Optionally toggle the Local (L) bit for locally administered addresses
Optionally toggle the Multicast (M) bit for multicast addresses
Press Generate to create the addresses
Click any address to copy it, or use Copy All for the entire batch
Count: 3, Separator: Colon, Unicast, Universal — Output: 3 globally unique unicast MACs like 7A:3F:82:B1:C4:D9Count: 5, Separator: Dash, Local, Unicast — Output: 5 locally administered unicast MACs with the L bit setUniversal (U/L bit = 0) addresses are assigned by the manufacturer; local (U/L bit = 1) addresses are manually configured or software-generated.
Common uses include VM provisioning, network testing, MAC authentication bypass research, and lab environments.
Globally unique (non-local) generated MACs may theoretically conflict. Use the Local bit for testing to avoid this.
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