Who owns MAC prefix E4EEFD?

E4EEFD is registered to MR&D Manufacturing in the IEEE MA-L registry.

What devices use E4EEFD?

Any network device with a MAC address starting E4:EE:FD was manufactured by or for MR&D Manufacturing.

MA-L · OUI prefix

MR&D Manufacturing

Any MAC address starting E4:EE:FD is registered to MR&D Manufacturing in US.

OUI prefix	E4EEFD
Vendor	MR&D Manufacturing
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	E4:EE:FD:00:00:00

What this means

The IEEE assigned the MA-L block E4EEFD to MR&D Manufacturing. 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 E4:EE:FD, it is MR&D Manufacturing hardware.

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