What this means
The IEEE assigned the MA-M block 9C69B4B to Toughdog Security Systems. 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 9C:69:B4:B, it is Toughdog Security Systems hardware.
Frequently Asked Questions
Who owns MAC prefix 9C69B4B?
9C69B4B is registered to Toughdog Security Systems 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. Toughdog Security Systems's block covers 1,048,576 addresses.
What devices use 9C69B4B?
Any network device with a MAC address starting 9C:69:B4:B was manufactured by or for Toughdog Security Systems.