EUROSONIC Ultraschall GmbH & Co. KG - MAC Prefix 4C81BE1 (MA-M)

What this means

The IEEE assigned the MA-M block 4C81BE1 to EUROSONIC Ultraschall GmbH & Co. KG. 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:81:BE:1, it is EUROSONIC Ultraschall GmbH & Co. KG hardware.

Frequently Asked Questions

Who owns MAC prefix 4C81BE1?

4C81BE1 is registered to EUROSONIC Ultraschall GmbH & Co. KG 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. EUROSONIC Ultraschall GmbH & Co. KG's block covers 1,048,576 addresses.

What devices use 4C81BE1?

Any network device with a MAC address starting 4C:81:BE:1 was manufactured by or for EUROSONIC Ultraschall GmbH & Co. KG.

OUI prefix	4C81BE1
Vendor	EUROSONIC Ultraschall GmbH & Co. KG
Registry	MA-M (28-bit, medium block)
Block size	1,048,576 addresses
Country	DE
Other blocks by this vendor	1 total
Example MAC	4C:81:BE:1:00:00:00