What this means
The IEEE assigned the MA-S block 70B3D541A to HYOSUNG Heavy Industries Corporation. 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 70:B3:D5:41:A, it is HYOSUNG Heavy Industries Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D541A?
70B3D541A is registered to HYOSUNG Heavy Industries Corporation in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. HYOSUNG Heavy Industries Corporation's block covers 4,096 addresses.
What devices use 70B3D541A?
Any network device with a MAC address starting 70:B3:D5:41:A was manufactured by or for HYOSUNG Heavy Industries Corporation.