What this means
The IEEE assigned the MA-L block 0005CD to D&M Holdings Inc.. 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 00:05:CD, it is D&M Holdings Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 0005CD?
0005CD is registered to D&M Holdings Inc. 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. D&M Holdings Inc.'s block covers 16,777,216 addresses.
What devices use 0005CD?
Any network device with a MAC address starting 00:05:CD was manufactured by or for D&M Holdings Inc..