What this means
The IEEE assigned the MA-L block 401D59 to Biometric Associates, LP. 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 40:1D:59, it is Biometric Associates, LP hardware.
Frequently Asked Questions
Who owns MAC prefix 401D59?
401D59 is registered to Biometric Associates, LP 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. Biometric Associates, LP's block covers 16,777,216 addresses.
What devices use 401D59?
Any network device with a MAC address starting 40:1D:59 was manufactured by or for Biometric Associates, LP.