What this means
The IEEE assigned the MA-L block B8BB11 to Espressif Systems (Singapore) Pte. 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 B8:BB:11, it is Espressif Systems (Singapore) Pte. Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B8BB11?
B8BB11 is registered to Espressif Systems (Singapore) Pte. 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. Espressif Systems (Singapore) Pte. Ltd's block covers 16,777,216 addresses.
What devices use B8BB11?
Any network device with a MAC address starting B8:BB:11 was manufactured by or for Espressif Systems (Singapore) Pte. Ltd.