What this means
The IEEE assigned the MA-L block 647657 to Innovative Security Designs. 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 64:76:57, it is Innovative Security Designs hardware.
Frequently Asked Questions
Who owns MAC prefix 647657?
647657 is registered to Innovative Security Designs in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Innovative Security Designs's block covers 16,777,216 addresses.
What devices use 647657?
Any network device with a MAC address starting 64:76:57 was manufactured by or for Innovative Security Designs.