What this means
The IEEE assigned the MA-L block B40ECF to Bouffalo Lab (Nanjing) 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 B4:0E:CF, it is Bouffalo Lab (Nanjing) Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix B40ECF?
B40ECF is registered to Bouffalo Lab (Nanjing) 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. Bouffalo Lab (Nanjing) Co., Ltd.'s block covers 16,777,216 addresses.
What devices use B40ECF?
Any network device with a MAC address starting B4:0E:CF was manufactured by or for Bouffalo Lab (Nanjing) Co., Ltd..