What this means
The IEEE assigned the MA-L block 000B28 to Quatech Inc.. 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 00:0B:28, it is Quatech Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 000B28?
000B28 is registered to Quatech Inc. 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. Quatech Inc.'s block covers 16,777,216 addresses.
What devices use 000B28?
Any network device with a MAC address starting 00:0B:28 was manufactured by or for Quatech Inc..