What this means

The IEEE assigned the MA-L block 4C8FA5 to Jastec. 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 4C:8F:A5, it is Jastec hardware.

Frequently Asked Questions

Who owns MAC prefix 4C8FA5?

4C8FA5 is registered to Jastec 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. Jastec's block covers 16,777,216 addresses.

What devices use 4C8FA5?

Any network device with a MAC address starting 4C:8F:A5 was manufactured by or for Jastec.