What this means
The IEEE assigned the MA-L block B431B8 to Aviwest. 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 B4:31:B8, it is Aviwest hardware.
Frequently Asked Questions
Who owns MAC prefix B431B8?
B431B8 is registered to Aviwest 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. Aviwest's block covers 16,777,216 addresses.
What devices use B431B8?
Any network device with a MAC address starting B4:31:B8 was manufactured by or for Aviwest.