What this means
The IEEE assigned the MA-L block D46CDA to CSM GmbH. 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 D4:6C:DA, it is CSM GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix D46CDA?
D46CDA is registered to CSM GmbH 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. CSM GmbH's block covers 16,777,216 addresses.
What devices use D46CDA?
Any network device with a MAC address starting D4:6C:DA was manufactured by or for CSM GmbH.