What this means
The IEEE assigned the MA-L block 2817CB to Software Freedom Conservancy. 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 28:17:CB, it is Software Freedom Conservancy hardware.
Frequently Asked Questions
Who owns MAC prefix 2817CB?
2817CB is registered to Software Freedom Conservancy in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Software Freedom Conservancy's block covers 16,777,216 addresses.
What devices use 2817CB?
Any network device with a MAC address starting 28:17:CB was manufactured by or for Software Freedom Conservancy.