What this means
The IEEE assigned the MA-L block 441DB1 to APTIV SERVICES US, LLC. 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 44:1D:B1, it is APTIV SERVICES US, LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 441DB1?
441DB1 is registered to APTIV SERVICES US, LLC 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. APTIV SERVICES US, LLC's block covers 16,777,216 addresses.
What devices use 441DB1?
Any network device with a MAC address starting 44:1D:B1 was manufactured by or for APTIV SERVICES US, LLC.