# MAC Address Generator

URL: https://phishdestroy.io/developer-tools/mac-address-generator
Category: General dev
Where it runs: Runs locally (nothing you enter is uploaded)

Create random MAC addresses for virtual machines, containers or test data, optionally under a fixed vendor or locally administered prefix.

## Example input

Locally administered

```
02:00:00
```

Ten addresses starting with 02:00:00: unicast and locally administered, so they cannot clash with a vendor-assigned range.

## FAQ

### Can the addresses be assigned to a network interface?

Only with a suitable prefix. Without one the first byte is random, so about half of the addresses have the multicast bit set and an interface will not accept them. Use 02:00:00 or another first byte whose second hex digit is 2, 6, A or E, which marks a locally administered unicast address.

### How is the OUI prefix applied?

Characters other than hex digits are removed and up to the first three bytes are replaced with your prefix; the remaining bytes are random. A real vendor OUI makes the address look like that vendor's hardware, so use one only on networks you control.

### Is anything sent to a server?

No. The addresses come from crypto.getRandomValues in your browser, and nothing is uploaded.

## Related tools

- [MAC OUI Lookup](https://phishdestroy.io/developer-tools/mac-oui-lookup)
- [IPv6 ULA Generator](https://phishdestroy.io/developer-tools/ipv6-ula-generator)
- [Random Port Generator](https://phishdestroy.io/developer-tools/random-port-generator)
- [Bulk UUID v4 Generator](https://phishdestroy.io/developer-tools/bulk-uuid-generator)

All tools: https://phishdestroy.io/developer-tools