What this means
The IEEE assigned the MA-L block B4B859 to Texa Spa. 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 B4:B8:59, it is Texa Spa hardware.
Frequently Asked Questions
Who owns MAC prefix B4B859?
B4B859 is registered to Texa Spa 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. Texa Spa's block covers 16,777,216 addresses.
What devices use B4B859?
Any network device with a MAC address starting B4:B8:59 was manufactured by or for Texa Spa.