What this means
The IEEE assigned the MA-S block 8C1F64493 to Security Products International, LLC. 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:64:49:3, it is Security Products International, LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F64493?
8C1F64493 is registered to Security Products International, LLC 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. Security Products International, LLC's block covers 4,096 addresses.
What devices use 8C1F64493?
Any network device with a MAC address starting 8C:1F:64:49:3 was manufactured by or for Security Products International, LLC.