Who owns MAC prefix 5C4058?

5C4058 is registered to Jefferson Audio Video Systems, Inc. in the IEEE MA-L registry.

What devices use 5C4058?

Any network device with a MAC address starting 5C:40:58 was manufactured by or for Jefferson Audio Video Systems, Inc..

MA-L · OUI prefix

Jefferson Audio Video Systems, Inc.

Any MAC address starting 5C:40:58 is registered to Jefferson Audio Video Systems, Inc. in US.

OUI prefix	5C4058
Vendor	Jefferson Audio Video Systems, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	5C:40:58:00:00:00

What this means

The IEEE assigned the MA-L block 5C4058 to Jefferson Audio Video Systems, Inc.. 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:40:58, it is Jefferson Audio Video Systems, Inc. hardware.

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