Who owns MAC prefix 000400?

000400 is registered to LEXMARK INTERNATIONAL, INC. in the IEEE MA-L registry.

What devices use 000400?

Any network device with a MAC address starting 00:04:00 was manufactured by or for LEXMARK INTERNATIONAL, INC..

MA-L · OUI prefix

LEXMARK INTERNATIONAL, INC.

Any MAC address starting 00:04:00 is registered to LEXMARK INTERNATIONAL, INC. in US.

OUI prefix	000400
Vendor	LEXMARK INTERNATIONAL, INC.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:04:00:00:00:00

What this means

The IEEE assigned the MA-L block 000400 to LEXMARK INTERNATIONAL, 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 00:04:00, it is LEXMARK INTERNATIONAL, INC. hardware.

Other LEXMARK INTERNATIONAL, INC. prefixes

LEXMARK INTERNATIONAL, INC. holds 5 registered blocks in total.

002000 0021B7 0084ED 788C77

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