Who owns MAC prefix 40F52E?

40F52E is registered to Leica Microsystems (Schweiz) AG in the IEEE MA-L registry.

What devices use 40F52E?

Any network device with a MAC address starting 40:F5:2E was manufactured by or for Leica Microsystems (Schweiz) AG.

MA-L · OUI prefix

Leica Microsystems (Schweiz) AG

Any MAC address starting 40:F5:2E is registered to Leica Microsystems (Schweiz) AG in CH.

OUI prefix	40F52E
Vendor	Leica Microsystems (Schweiz) AG
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	40:F5:2E:00:00:00

What this means

The IEEE assigned the MA-L block 40F52E to Leica Microsystems (Schweiz) AG. 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 40:F5:2E, it is Leica Microsystems (Schweiz) AG hardware.

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