What this means
The IEEE assigned the MA-L block 445D5E to SHENZHEN Coolkit Technology CO.,LTD. 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 44:5D:5E, it is SHENZHEN Coolkit Technology CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 445D5E?
445D5E is registered to SHENZHEN Coolkit Technology CO.,LTD 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 Coolkit Technology CO.,LTD's block covers 16,777,216 addresses.
What devices use 445D5E?
Any network device with a MAC address starting 44:5D:5E was manufactured by or for SHENZHEN Coolkit Technology CO.,LTD.