What this means
The IEEE assigned the MA-M block 5C857ED to Nautech Electronics Ltd. 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 5C:85:7E:D, it is Nautech Electronics Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 5C857ED?
5C857ED is registered to Nautech Electronics Ltd in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Nautech Electronics Ltd's block covers 1,048,576 addresses.
What devices use 5C857ED?
Any network device with a MAC address starting 5C:85:7E:D was manufactured by or for Nautech Electronics Ltd.