What this means
The IEEE assigned the MA-L block 7C3920 to SSOMA SECURITY. 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 7C:39:20, it is SSOMA SECURITY hardware.
Frequently Asked Questions
Who owns MAC prefix 7C3920?
7C3920 is registered to SSOMA SECURITY 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. SSOMA SECURITY's block covers 16,777,216 addresses.
What devices use 7C3920?
Any network device with a MAC address starting 7C:39:20 was manufactured by or for SSOMA SECURITY.