What this means
The IEEE assigned the MA-L block C0C4F9 to Qisda Corporation. 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 C0:C4:F9, it is Qisda Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix C0C4F9?
C0C4F9 is registered to Qisda Corporation 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. Qisda Corporation's block covers 16,777,216 addresses.
What devices use C0C4F9?
Any network device with a MAC address starting C0:C4:F9 was manufactured by or for Qisda Corporation.