What this means
The IEEE assigned the MA-L block 1001CA to Ashley Butterworth. 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 10:01:CA, it is Ashley Butterworth hardware.
Frequently Asked Questions
Who owns MAC prefix 1001CA?
1001CA is registered to Ashley Butterworth 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. Ashley Butterworth's block covers 16,777,216 addresses.
What devices use 1001CA?
Any network device with a MAC address starting 10:01:CA was manufactured by or for Ashley Butterworth.