What this means
The IEEE assigned the MA-L block EC7C74 to Justone Technologies 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 EC:7C:74, it is Justone Technologies Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix EC7C74?
EC7C74 is registered to Justone Technologies 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. Justone Technologies Co., Ltd.'s block covers 16,777,216 addresses.
What devices use EC7C74?
Any network device with a MAC address starting EC:7C:74 was manufactured by or for Justone Technologies Co., Ltd..