What this means
The IEEE assigned the MA-L block 0000A4 to ACORN COMPUTERS LIMITED. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 00:00:A4, it is ACORN COMPUTERS LIMITED hardware.
Frequently Asked Questions
Who owns MAC prefix 0000A4?
0000A4 is registered to ACORN COMPUTERS LIMITED in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. ACORN COMPUTERS LIMITED's block covers 16,777,216 addresses.
What devices use 0000A4?
Any network device with a MAC address starting 00:00:A4 was manufactured by or for ACORN COMPUTERS LIMITED.