What this means
The IEEE assigned the MA-L block 00037F to Atheros Communications, 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 00:03:7F, it is Atheros Communications, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00037F?
00037F is registered to Atheros Communications, 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. Atheros Communications, Inc.'s block covers 16,777,216 addresses.
What devices use 00037F?
Any network device with a MAC address starting 00:03:7F was manufactured by or for Atheros Communications, Inc..