Who owns MAC prefix 0021F0?

0021F0 is registered to EW3 Technologies LLC in the IEEE MA-L registry.

What devices use 0021F0?

Any network device with a MAC address starting 00:21:F0 was manufactured by or for EW3 Technologies LLC.

MA-L · OUI prefix

EW3 Technologies LLC

Any MAC address starting 00:21:F0 is registered to EW3 Technologies LLC in US.

OUI prefix	0021F0
Vendor	EW3 Technologies LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:21:F0:00:00:00

What this means

The IEEE assigned the MA-L block 0021F0 to EW3 Technologies LLC. 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 00:21:F0, it is EW3 Technologies LLC hardware.

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