Who owns MAC prefix BC31981?

BC31981 is registered to swiss-sonic Ultraschall AG in the IEEE MA-M registry.

What devices use BC31981?

Any network device with a MAC address starting BC:31:98:1 was manufactured by or for swiss-sonic Ultraschall AG.

MA-M · OUI prefix

swiss-sonic Ultraschall AG

Any MAC address starting BC:31:98:1 is registered to swiss-sonic Ultraschall AG in CH.

OUI prefix	BC31981
Vendor	swiss-sonic Ultraschall AG
Registry	MA-M (28-bit, medium block)
Country	CH
Example MAC	BC:31:98:1:00:00:00

What this means

The IEEE assigned the MA-M block BC31981 to swiss-sonic Ultraschall AG. 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 BC:31:98:1, it is swiss-sonic Ultraschall AG hardware.

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