What this means
The IEEE assigned the MA-L block 00138C to Kumyoung.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 00:13:8C, it is Kumyoung.Co.Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 00138C?
00138C is registered to Kumyoung.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. Kumyoung.Co.Ltd's block covers 16,777,216 addresses.
What devices use 00138C?
Any network device with a MAC address starting 00:13:8C was manufactured by or for Kumyoung.Co.Ltd.