What this means
The IEEE assigned the MA-L block 000D1E to Control Techniques. 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 00:0D:1E, it is Control Techniques hardware.
Frequently Asked Questions
Who owns MAC prefix 000D1E?
000D1E is registered to Control Techniques 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. Control Techniques's block covers 16,777,216 addresses.
What devices use 000D1E?
Any network device with a MAC address starting 00:0D:1E was manufactured by or for Control Techniques.