What this means
The IEEE assigned the MA-L block C4346B to Hewlett Packard. 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 C4:34:6B, it is Hewlett Packard hardware.
Frequently Asked Questions
Who owns MAC prefix C4346B?
C4346B is registered to Hewlett Packard 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. Hewlett Packard's block covers 16,777,216 addresses.
What devices use C4346B?
Any network device with a MAC address starting C4:34:6B was manufactured by or for Hewlett Packard.