What this means
The IEEE assigned the MA-L block D43D67 to Carma Industries 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 D4:3D:67, it is Carma Industries Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix D43D67?
D43D67 is registered to Carma Industries 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. Carma Industries Inc.'s block covers 16,777,216 addresses.
What devices use D43D67?
Any network device with a MAC address starting D4:3D:67 was manufactured by or for Carma Industries Inc..