What this means
The IEEE assigned the MA-L block F4939F to Hon Hai Precision Industry Co., Ltd.. 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 F4:93:9F, it is Hon Hai Precision Industry Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix F4939F?
F4939F is registered to Hon Hai Precision Industry Co., Ltd. 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. Hon Hai Precision Industry Co., Ltd.'s block covers 16,777,216 addresses.
What devices use F4939F?
Any network device with a MAC address starting F4:93:9F was manufactured by or for Hon Hai Precision Industry Co., Ltd..