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.
Frequently Asked Questions
Who owns MAC prefix A4A404?
A4A404 is registered to Bubendorff SAS in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Bubendorff SAS's block covers 16,777,216 addresses.
What devices use A4A404?
Any network device with a MAC address starting A4:A4:04 was manufactured by or for Bubendorff SAS.