What this means
The IEEE assigned the MA-L block 0C57EB to Mueller 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 0C:57:EB, it is Mueller Systems hardware.
Frequently Asked Questions
Who owns MAC prefix 0C57EB?
0C57EB is registered to Mueller Systems 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. Mueller Systems's block covers 16,777,216 addresses.
What devices use 0C57EB?
Any network device with a MAC address starting 0C:57:EB was manufactured by or for Mueller Systems.