What this means
The IEEE assigned the MA-L block 00217A to Sejin Electron, Inc.. 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 00:21:7A, it is Sejin Electron, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00217A?
00217A is registered to Sejin Electron, Inc. 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. Sejin Electron, Inc.'s block covers 16,777,216 addresses.
What devices use 00217A?
Any network device with a MAC address starting 00:21:7A was manufactured by or for Sejin Electron, Inc..