What this means
The IEEE assigned the MA-L block 747A90 to Murata Manufacturing 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 74:7A:90, it is Murata Manufacturing Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 747A90?
747A90 is registered to Murata Manufacturing 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. Murata Manufacturing Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 747A90?
Any network device with a MAC address starting 74:7A:90 was manufactured by or for Murata Manufacturing Co., Ltd..