Network
MAC Address Generator
Generate random 48-bit addresses with the locally administered bit set and multicast bit cleared.
About this tool
When to use it
Generate random 48-bit addresses with the locally administered bit set and multicast bit cleared.
How to use it
Choose a count, generate addresses, and inspect the batch before copying or downloading. Check for collisions on the actual link before assigning any generated address to a device.
Guide updated . Examples checked against this implementation.
Worked examples
Recognize a local unicast shape
Input
How many: 1Expected output
Six hexadecimal byte pairs; the first byte has local bit 1 and multicast bit 0This is a property example, not a fixed address. The first byte's low two bits are binary 10; the other bits are random.
Errors and unsupported input
The chosen address conflicts with another deviceResolve the assignment in your network inventory and choose a different address. The generator checks only duplicates within its own batch.
Continue this workflow
- MAC Address Lookup: Confirm the generated address's administration and transmission bits.
Questions
Frequently asked questions
Does random generation eliminate collisions?
No. It lowers their likelihood. Existing assignments are outside this page's view and still require coordination.