Who owns MAC prefix 00401D?

00401D is registered to INVISIBLE SOFTWARE, INC. in the IEEE MA-L registry.

What devices use 00401D?

Any network device with a MAC address starting 00:40:1D was manufactured by or for INVISIBLE SOFTWARE, INC..

MA-L · OUI prefix

INVISIBLE SOFTWARE, INC.

Any MAC address starting 00:40:1D is registered to INVISIBLE SOFTWARE, INC. in US.

OUI prefix	00401D
Vendor	INVISIBLE SOFTWARE, INC.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:40:1D:00:00:00

What this means

The IEEE assigned the MA-L block 00401D to INVISIBLE SOFTWARE, INC.. 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 00:40:1D, it is INVISIBLE SOFTWARE, INC. hardware.

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