What this means
The IEEE assigned the MA-L block ECF451 to Arcadyan Corporation. 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 EC:F4:51, it is Arcadyan Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix ECF451?
ECF451 is registered to Arcadyan Corporation 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. Arcadyan Corporation's block covers 16,777,216 addresses.
What devices use ECF451?
Any network device with a MAC address starting EC:F4:51 was manufactured by or for Arcadyan Corporation.