What this means
The IEEE assigned the MA-L block 30053F to JTI Co.,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 30:05:3F, it is JTI Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 30053F?
30053F is registered to JTI Co.,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. JTI Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use 30053F?
Any network device with a MAC address starting 30:05:3F was manufactured by or for JTI Co.,Ltd..