Who owns MAC prefix 541FD5?

541FD5 is registered to Advantage Electronics in the IEEE MA-L registry.

What devices use 541FD5?

Any network device with a MAC address starting 54:1F:D5 was manufactured by or for Advantage Electronics.

MA-L · OUI prefix

Advantage Electronics

Any MAC address starting 54:1F:D5 is registered to Advantage Electronics in US.

OUI prefix	541FD5
Vendor	Advantage Electronics
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	54:1F:D5:00:00:00

What this means

The IEEE assigned the MA-L block 541FD5 to Advantage Electronics. 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 54:1F:D5, it is Advantage Electronics hardware.

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