Who owns MAC prefix B4466B?

B4466B is registered to REALTIMEID AS in the IEEE MA-L registry.

What devices use B4466B?

Any network device with a MAC address starting B4:46:6B was manufactured by or for REALTIMEID AS.

MA-L · OUI prefix

REALTIMEID AS

Any MAC address starting B4:46:6B is registered to REALTIMEID AS in NO.

OUI prefix	B4466B
Vendor	REALTIMEID AS
Registry	MA-L (24-bit, large block)
Country	NO
Example MAC	B4:46:6B:00:00:00

What this means

The IEEE assigned the MA-L block B4466B to REALTIMEID AS. 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 B4:46:6B, it is REALTIMEID AS hardware.

Look up another MAC