What this means
The IEEE assigned the MA-L block 00123A to Posystech Inc., Co.. 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 00:12:3A, it is Posystech Inc., Co. hardware.
Frequently Asked Questions
Who owns MAC prefix 00123A?
00123A is registered to Posystech Inc., Co. 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. Posystech Inc., Co.'s block covers 16,777,216 addresses.
What devices use 00123A?
Any network device with a MAC address starting 00:12:3A was manufactured by or for Posystech Inc., Co..