Who owns MAC prefix 000741?

000741 is registered to Sierra Automated Systems in the IEEE MA-L registry.

What devices use 000741?

Any network device with a MAC address starting 00:07:41 was manufactured by or for Sierra Automated Systems.

MA-L · OUI prefix

Sierra Automated Systems

Any MAC address starting 00:07:41 is registered to Sierra Automated Systems in US.

OUI prefix	000741
Vendor	Sierra Automated Systems
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:07:41:00:00:00

What this means

The IEEE assigned the MA-L block 000741 to Sierra Automated Systems. 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 00:07:41, it is Sierra Automated Systems hardware.

Look up another MAC