What this means
The IEEE assigned the MA-M block A4580F5 to CoAsia Microelectronics Corp.. 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 A4:58:0F:5, it is CoAsia Microelectronics Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix A4580F5?
A4580F5 is registered to CoAsia Microelectronics Corp. 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. CoAsia Microelectronics Corp.'s block covers 1,048,576 addresses.
What devices use A4580F5?
Any network device with a MAC address starting A4:58:0F:5 was manufactured by or for CoAsia Microelectronics Corp..