What this means
The IEEE assigned the MA-L block 000281 to Madge Ltd.. 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 00:02:81, it is Madge Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 000281?
000281 is registered to Madge Ltd. 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. Madge Ltd.'s block covers 16,777,216 addresses.
What devices use 000281?
Any network device with a MAC address starting 00:02:81 was manufactured by or for Madge Ltd..