Who owns MAC prefix A4A404?

A4A404 is registered to Bubendorff SAS in the IEEE MA-L registry.

What devices use A4A404?

Any network device with a MAC address starting A4:A4:04 was manufactured by or for Bubendorff SAS.

MA-L · OUI prefix

Bubendorff SAS

Any MAC address starting A4:A4:04 is registered to Bubendorff SAS in FR.

OUI prefix	A4A404
Vendor	Bubendorff SAS
Registry	MA-L (24-bit, large block)
Country	FR
Example MAC	A4:A4:04:00:00:00

What this means

The IEEE assigned the MA-L block A4A404 to Bubendorff SAS. 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 A4:A4:04, it is Bubendorff SAS hardware.

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