What this means
The IEEE assigned the MA-L block D040BE to NPO RPS 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 D0:40:BE, it is NPO RPS LLC hardware.
Frequently Asked Questions
Who owns MAC prefix D040BE?
D040BE is registered to NPO RPS 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. NPO RPS LLC's block covers 16,777,216 addresses.
What devices use D040BE?
Any network device with a MAC address starting D0:40:BE was manufactured by or for NPO RPS LLC.