What this means
The IEEE assigned the MA-L block 4CEF56 to Shenzhen Sundray Technologies company Limited. 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 4C:EF:56, it is Shenzhen Sundray Technologies company Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 4CEF56?
4CEF56 is registered to Shenzhen Sundray Technologies company Limited 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. Shenzhen Sundray Technologies company Limited's block covers 16,777,216 addresses.
What devices use 4CEF56?
Any network device with a MAC address starting 4C:EF:56 was manufactured by or for Shenzhen Sundray Technologies company Limited.