Who owns MAC prefix 00406F?

00406F is registered to SYNC RESEARCH INC. in the IEEE MA-L registry.

What devices use 00406F?

Any network device with a MAC address starting 00:40:6F was manufactured by or for SYNC RESEARCH INC..

MA-L · OUI prefix

SYNC RESEARCH INC.

Any MAC address starting 00:40:6F is registered to SYNC RESEARCH INC. in US.

OUI prefix	00406F
Vendor	SYNC RESEARCH INC.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:40:6F:00:00:00

What this means

The IEEE assigned the MA-L block 00406F to SYNC RESEARCH INC.. 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 00:40:6F, it is SYNC RESEARCH INC. hardware.

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