Who owns MAC prefix 000191?

000191 is registered to SYRED Data Systems in the IEEE MA-L registry.

What devices use 000191?

Any network device with a MAC address starting 00:01:91 was manufactured by or for SYRED Data Systems.

MA-L · OUI prefix

SYRED Data Systems

Any MAC address starting 00:01:91 is registered to SYRED Data Systems in US.

OUI prefix	000191
Vendor	SYRED Data Systems
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:01:91:00:00:00

What this means

The IEEE assigned the MA-L block 000191 to SYRED Data 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 00:01:91, it is SYRED Data Systems hardware.

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