What this means
The IEEE assigned the MA-S block 8C1F644CA to North Building Technologies Limited. 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:64:4C:A, it is North Building Technologies Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F644CA?
8C1F644CA is registered to North Building Technologies Limited 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. North Building Technologies Limited's block covers 4,096 addresses.
What devices use 8C1F644CA?
Any network device with a MAC address starting 8C:1F:64:4C:A was manufactured by or for North Building Technologies Limited.