What this means
The IEEE assigned the MA-L block 0003F1 to Cicada Semiconductor, 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 00:03:F1, it is Cicada Semiconductor, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 0003F1?
0003F1 is registered to Cicada Semiconductor, Inc. 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. Cicada Semiconductor, Inc.'s block covers 16,777,216 addresses.
What devices use 0003F1?
Any network device with a MAC address starting 00:03:F1 was manufactured by or for Cicada Semiconductor, Inc..