What this means
The IEEE assigned the MA-M block F4A4545 to Denshijiki Industry 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 F4:A4:54:5, it is Denshijiki Industry Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix F4A4545?
F4A4545 is registered to Denshijiki Industry Co.,Ltd in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Denshijiki Industry Co.,Ltd's block covers 1,048,576 addresses.
What devices use F4A4545?
Any network device with a MAC address starting F4:A4:54:5 was manufactured by or for Denshijiki Industry Co.,Ltd.