Who owns MAC prefix 540237?

540237 is registered to Teltronic AG in the IEEE MA-L registry.

What devices use 540237?

Any network device with a MAC address starting 54:02:37 was manufactured by or for Teltronic AG.

MA-L · OUI prefix

Teltronic AG

Any MAC address starting 54:02:37 is registered to Teltronic AG in CH.

OUI prefix	540237
Vendor	Teltronic AG
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	54:02:37:00:00:00

What this means

The IEEE assigned the MA-L block 540237 to Teltronic 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 54:02:37, it is Teltronic AG hardware.

Look up another MAC