What this means
The IEEE assigned the MA-L block B86491 to CK Telecom 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 B8:64:91, it is CK Telecom Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B86491?
B86491 is registered to CK Telecom 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. CK Telecom Ltd's block covers 16,777,216 addresses.
What devices use B86491?
Any network device with a MAC address starting B8:64:91 was manufactured by or for CK Telecom Ltd.