Who owns MAC prefix 103A5D?

103A5D is registered to Emerson in the IEEE MA-L registry.

What devices use 103A5D?

Any network device with a MAC address starting 10:3A:5D was manufactured by or for Emerson.

MA-L · OUI prefix

Emerson

Any MAC address starting 10:3A:5D is registered to Emerson in US.

OUI prefix	103A5D
Vendor	Emerson
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	10:3A:5D:00:00:00

What this means

The IEEE assigned the MA-L block 103A5D to Emerson. 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 10:3A:5D, it is Emerson hardware.

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