What this means
The IEEE assigned the MA-M block 381F260 to JAESUNG INFORMATION & COMMUNICATION 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 38:1F:26:0, it is JAESUNG INFORMATION & COMMUNICATION CO.LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 381F260?
381F260 is registered to JAESUNG INFORMATION & COMMUNICATION CO.LTD in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. JAESUNG INFORMATION & COMMUNICATION CO.LTD's block covers 1,048,576 addresses.
What devices use 381F260?
Any network device with a MAC address starting 38:1F:26:0 was manufactured by or for JAESUNG INFORMATION & COMMUNICATION CO.LTD.