What this means
The IEEE assigned the MA-L block EC09C9 to Texas Instruments. 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 EC:09:C9, it is Texas Instruments hardware.
Frequently Asked Questions
Who owns MAC prefix EC09C9?
EC09C9 is registered to Texas Instruments 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. Texas Instruments's block covers 16,777,216 addresses.
What devices use EC09C9?
Any network device with a MAC address starting EC:09:C9 was manufactured by or for Texas Instruments.