Who owns MAC prefix 001B04?

001B04 is registered to Affinity International S.p.a in the IEEE MA-L registry.

What devices use 001B04?

Any network device with a MAC address starting 00:1B:04 was manufactured by or for Affinity International S.p.a.

MA-L · OUI prefix

Affinity International S.p.a

Any MAC address starting 00:1B:04 is registered to Affinity International S.p.a in IT.

OUI prefix	001B04
Vendor	Affinity International S.p.a
Registry	MA-L (24-bit, large block)
Country	IT
Example MAC	00:1B:04:00:00:00

What this means

The IEEE assigned the MA-L block 001B04 to Affinity International S.p.a. 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 00:1B:04, it is Affinity International S.p.a hardware.

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