Who owns MAC prefix 0018AA?

0018AA is registered to Protec Fire Detection plc in the IEEE MA-L registry.

What devices use 0018AA?

Any network device with a MAC address starting 00:18:AA was manufactured by or for Protec Fire Detection plc.

MA-L · OUI prefix

Protec Fire Detection plc

Any MAC address starting 00:18:AA is registered to Protec Fire Detection plc.

OUI prefix	0018AA
Vendor	Protec Fire Detection plc
Registry	MA-L (24-bit, large block)
Example MAC	00:18:AA:00:00:00

What this means

The IEEE assigned the MA-L block 0018AA to Protec Fire Detection plc. 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 00:18:AA, it is Protec Fire Detection plc hardware.

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