Who owns MAC prefix 00404F?

00404F is registered to SPACE & NAVAL WARFARE SYSTEMS in the IEEE MA-L registry.

What devices use 00404F?

Any network device with a MAC address starting 00:40:4F was manufactured by or for SPACE & NAVAL WARFARE SYSTEMS.

MA-L · OUI prefix

SPACE & NAVAL WARFARE SYSTEMS

Any MAC address starting 00:40:4F is registered to SPACE & NAVAL WARFARE SYSTEMS in US.

OUI prefix	00404F
Vendor	SPACE & NAVAL WARFARE SYSTEMS
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:40:4F:00:00:00

What this means

The IEEE assigned the MA-L block 00404F to SPACE & NAVAL WARFARE 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 00:40:4F, it is SPACE & NAVAL WARFARE SYSTEMS hardware.

Look up another MAC