What this means
The IEEE assigned the MA-L block 38879C to Ei Electronics. 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 38:87:9C, it is Ei Electronics hardware.
Frequently Asked Questions
Who owns MAC prefix 38879C?
38879C is registered to Ei Electronics 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. Ei Electronics's block covers 16,777,216 addresses.
What devices use 38879C?
Any network device with a MAC address starting 38:87:9C was manufactured by or for Ei Electronics.