What this means
The IEEE assigned the MA-M block 28B77C1 to SolarEdge Technologies. 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 28:B7:7C:1, it is SolarEdge Technologies hardware.
Frequently Asked Questions
Who owns MAC prefix 28B77C1?
28B77C1 is registered to SolarEdge Technologies 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. SolarEdge Technologies's block covers 1,048,576 addresses.
What devices use 28B77C1?
Any network device with a MAC address starting 28:B7:7C:1 was manufactured by or for SolarEdge Technologies.