What this means
The IEEE assigned the MA-M block A4580FA to GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT 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 A4:58:0F:A, it is GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix A4580FA?
A4580FA is registered to GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT 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. GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT CO.,LTD.'s block covers 1,048,576 addresses.
What devices use A4580FA?
Any network device with a MAC address starting A4:58:0F:A was manufactured by or for GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT CO.,LTD..