What this means
The IEEE assigned the MA-M block 78C2C09 to SES. 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 78:C2:C0:9, it is SES hardware.
Frequently Asked Questions
Who owns MAC prefix 78C2C09?
78C2C09 is registered to SES 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. SES's block covers 1,048,576 addresses.
What devices use 78C2C09?
Any network device with a MAC address starting 78:C2:C0:9 was manufactured by or for SES.