What this means
The IEEE assigned the MA-L block 641B85 to Vantiva USA LLC. 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 64:1B:85, it is Vantiva USA LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 641B85?
641B85 is registered to Vantiva USA LLC 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. Vantiva USA LLC's block covers 16,777,216 addresses.
What devices use 641B85?
Any network device with a MAC address starting 64:1B:85 was manufactured by or for Vantiva USA LLC.