What this means
The IEEE assigned the MA-L block B8B4C9 to Cisco Meraki. 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:B4:C9, it is Cisco Meraki hardware.
Frequently Asked Questions
Who owns MAC prefix B8B4C9?
B8B4C9 is registered to Cisco Meraki 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. Cisco Meraki's block covers 16,777,216 addresses.
What devices use B8B4C9?
Any network device with a MAC address starting B8:B4:C9 was manufactured by or for Cisco Meraki.