Who owns MAC prefix 001BC5058?

001BC5058 is registered to optiMEAS GmbH in the IEEE MA-S registry.

What devices use 001BC5058?

Any network device with a MAC address starting 00:1B:C5:05:8 was manufactured by or for optiMEAS GmbH.

MA-S · OUI prefix

optiMEAS GmbH

Any MAC address starting 00:1B:C5:05:8 is registered to optiMEAS GmbH in DE.

OUI prefix	001BC5058
Vendor	optiMEAS GmbH
Registry	MA-S (36-bit, small block)
Country	DE
Example MAC	00:1B:C5:05:8:00:00:00

What this means

The IEEE assigned the MA-S block 001BC5058 to optiMEAS GmbH. 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:C5:05:8, it is optiMEAS GmbH hardware.

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