What this means
The IEEE assigned the MA-L block F40321 to BeNeXt B.V.. 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 F4:03:21, it is BeNeXt B.V. hardware.
Frequently Asked Questions
Who owns MAC prefix F40321?
F40321 is registered to BeNeXt B.V. 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. BeNeXt B.V.'s block covers 16,777,216 addresses.
What devices use F40321?
Any network device with a MAC address starting F4:03:21 was manufactured by or for BeNeXt B.V..