What this means
The IEEE assigned the MA-S block 8C1F64CFE to Instrument Development Group (IDG) at Johns Hopkins University. 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:CF:E, it is Instrument Development Group (IDG) at Johns Hopkins University hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F64CFE?
8C1F64CFE is registered to Instrument Development Group (IDG) at Johns Hopkins University 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. Instrument Development Group (IDG) at Johns Hopkins University's block covers 4,096 addresses.
What devices use 8C1F64CFE?
Any network device with a MAC address starting 8C:1F:64:CF:E was manufactured by or for Instrument Development Group (IDG) at Johns Hopkins University.