What this means
The IEEE assigned the MA-L block 002379 to Union Business Machines Co. 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 00:23:79, it is Union Business Machines Co. Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 002379?
002379 is registered to Union Business Machines Co. 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. Union Business Machines Co. Ltd.'s block covers 16,777,216 addresses.
What devices use 002379?
Any network device with a MAC address starting 00:23:79 was manufactured by or for Union Business Machines Co. Ltd..