What this means
The IEEE assigned the MA-L block B4A94F to MERCURY CORPORATION. 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:A9:4F, it is MERCURY CORPORATION hardware.
Frequently Asked Questions
Who owns MAC prefix B4A94F?
B4A94F is registered to MERCURY CORPORATION 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. MERCURY CORPORATION's block covers 16,777,216 addresses.
What devices use B4A94F?
Any network device with a MAC address starting B4:A9:4F was manufactured by or for MERCURY CORPORATION.