What this means
The IEEE assigned the MA-L block 503A7D to AlphaTech PLC Int’l 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 50:3A:7D, it is AlphaTech PLC Int’l Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 503A7D?
503A7D is registered to AlphaTech PLC Int’l 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. AlphaTech PLC Int’l Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 503A7D?
Any network device with a MAC address starting 50:3A:7D was manufactured by or for AlphaTech PLC Int’l Co., Ltd..