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.
Frequently Asked Questions
Who owns MAC prefix 0021F0?
0021F0 is registered to EW3 Technologies LLC in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. EW3 Technologies LLC's block covers 16,777,216 addresses.
What devices use 0021F0?
Any network device with a MAC address starting 00:21:F0 was manufactured by or for EW3 Technologies LLC.