Who owns MAC prefix 001F66?

001F66 is registered to PLANAR LLC in the IEEE MA-L registry.

What devices use 001F66?

Any network device with a MAC address starting 00:1F:66 was manufactured by or for PLANAR LLC.

MA-L · OUI prefix

PLANAR LLC

Any MAC address starting 00:1F:66 is registered to PLANAR LLC in RU.

OUI prefix	001F66
Vendor	PLANAR LLC
Registry	MA-L (24-bit, large block)
Country	RU
Example MAC	00:1F:66:00:00:00

What this means

The IEEE assigned the MA-L block 001F66 to PLANAR 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 00:1F:66, it is PLANAR LLC hardware.

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