Who owns MAC prefix 001F9B?

001F9B is registered to POSBRO in the IEEE MA-L registry.

What devices use 001F9B?

Any network device with a MAC address starting 00:1F:9B was manufactured by or for POSBRO.

MA-L · OUI prefix

POSBRO

Any MAC address starting 00:1F:9B is registered to POSBRO in KR.

OUI prefix	001F9B
Vendor	POSBRO
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:1F:9B:00:00:00

What this means

The IEEE assigned the MA-L block 001F9B to POSBRO. 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:9B, it is POSBRO hardware.

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