What this means
The IEEE assigned the MA-L block 345C40 to Cargt Holdings LLC. 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 34:5C:40, it is Cargt Holdings LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 345C40?
345C40 is registered to Cargt Holdings LLC 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. Cargt Holdings LLC's block covers 16,777,216 addresses.
What devices use 345C40?
Any network device with a MAC address starting 34:5C:40 was manufactured by or for Cargt Holdings LLC.