What this means
The IEEE assigned the MA-L block 000F3F to Big Bear Networks. 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 00:0F:3F, it is Big Bear Networks hardware.
Frequently Asked Questions
Who owns MAC prefix 000F3F?
000F3F is registered to Big Bear Networks 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. Big Bear Networks's block covers 16,777,216 addresses.
What devices use 000F3F?
Any network device with a MAC address starting 00:0F:3F was manufactured by or for Big Bear Networks.