What this means
The IEEE assigned the MA-L block 00041D to Corega of America. 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 00:04:1D, it is Corega of America hardware.
Frequently Asked Questions
Who owns MAC prefix 00041D?
00041D is registered to Corega of America 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. Corega of America's block covers 16,777,216 addresses.
What devices use 00041D?
Any network device with a MAC address starting 00:04:1D was manufactured by or for Corega of America.