What this means
The IEEE assigned the MA-S block 8C1F6477E to Institute of geophysics, China earthquake administration. 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 8C:1F:64:77:E, it is Institute of geophysics, China earthquake administration hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F6477E?
8C1F6477E is registered to Institute of geophysics, China earthquake administration 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. Institute of geophysics, China earthquake administration's block covers 4,096 addresses.
What devices use 8C1F6477E?
Any network device with a MAC address starting 8C:1F:64:77:E was manufactured by or for Institute of geophysics, China earthquake administration.