Who owns MAC prefix 000540?

000540 is registered to Tokyo Electron Device Limited in the IEEE MA-L registry.

What devices use 000540?

Any network device with a MAC address starting 00:05:40 was manufactured by or for Tokyo Electron Device Limited.

MA-L · OUI prefix

Tokyo Electron Device Limited

Any MAC address starting 00:05:40 is registered to Tokyo Electron Device Limited in JP.

OUI prefix	000540
Vendor	Tokyo Electron Device Limited
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:05:40:00:00:00

What this means

The IEEE assigned the MA-L block 000540 to Tokyo Electron Device Limited. 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 00:05:40, it is Tokyo Electron Device Limited hardware.

Other Tokyo Electron Device Limited prefixes

Tokyo Electron Device Limited holds 2 registered blocks in total.

00504D

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