Who owns MAC prefix D40129?

D40129 is registered to Broadcom in the IEEE MA-L registry.

What devices use D40129?

Any network device with a MAC address starting D4:01:29 was manufactured by or for Broadcom.

MA-L · OUI prefix

Broadcom

Any MAC address starting D4:01:29 is registered to Broadcom in US.

OUI prefix	D40129
Vendor	Broadcom
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	D4:01:29:00:00:00

What this means

The IEEE assigned the MA-L block D40129 to Broadcom. 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 D4:01:29, it is Broadcom hardware.

Other Broadcom prefixes

Broadcom holds 9 registered blocks in total.

000AF7 000DB6 001018 001BE9 18C086 38BAB0 B8CEED E03E44

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