Who owns MAC prefix 00165F?

00165F is registered to Fairmount Automation in the IEEE MA-L registry.

What devices use 00165F?

Any network device with a MAC address starting 00:16:5F was manufactured by or for Fairmount Automation.

MA-L · OUI prefix

Fairmount Automation

Any MAC address starting 00:16:5F is registered to Fairmount Automation in US.

OUI prefix	00165F
Vendor	Fairmount Automation
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:16:5F:00:00:00

What this means

The IEEE assigned the MA-L block 00165F to Fairmount Automation. 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 00:16:5F, it is Fairmount Automation hardware.

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