What this means
The IEEE assigned the MA-L block D03D52 to Ava Security Limited. 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 D0:3D:52, it is Ava Security Limited hardware.
Frequently Asked Questions
Who owns MAC prefix D03D52?
D03D52 is registered to Ava Security Limited 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. Ava Security Limited's block covers 16,777,216 addresses.
What devices use D03D52?
Any network device with a MAC address starting D0:3D:52 was manufactured by or for Ava Security Limited.