What this means
The IEEE assigned the MA-L block 503E7C to LeiShen Intelligent System 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 50:3E:7C, it is LeiShen Intelligent System Co.Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 503E7C?
503E7C is registered to LeiShen Intelligent System 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. LeiShen Intelligent System Co.Ltd's block covers 16,777,216 addresses.
What devices use 503E7C?
Any network device with a MAC address starting 50:3E:7C was manufactured by or for LeiShen Intelligent System Co.Ltd.