What this means
The IEEE assigned the MA-L block AC330B to Japan Computer Vision Corp.. 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 AC:33:0B, it is Japan Computer Vision Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix AC330B?
AC330B is registered to Japan Computer Vision Corp. 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. Japan Computer Vision Corp.'s block covers 16,777,216 addresses.
What devices use AC330B?
Any network device with a MAC address starting AC:33:0B was manufactured by or for Japan Computer Vision Corp..