What this means
The IEEE assigned the MA-L block 80999B 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 80:99:9B, it is Murata Manufacturing Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 80999B?
80999B 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 80999B?
Any network device with a MAC address starting 80:99:9B was manufactured by or for Murata Manufacturing Co., Ltd..