What this means
The IEEE assigned the MA-L block 0C9E91 to Sankosha Corporation. 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 0C:9E:91, it is Sankosha Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 0C9E91?
0C9E91 is registered to Sankosha Corporation 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. Sankosha Corporation's block covers 16,777,216 addresses.
What devices use 0C9E91?
Any network device with a MAC address starting 0C:9E:91 was manufactured by or for Sankosha Corporation.