What this means
The IEEE assigned the MA-L block EC9BF3 to SAMSUNG ELECTRO-MECHANICS(THAILAND). 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:9B:F3, it is SAMSUNG ELECTRO-MECHANICS(THAILAND) hardware.
Frequently Asked Questions
Who owns MAC prefix EC9BF3?
EC9BF3 is registered to SAMSUNG ELECTRO-MECHANICS(THAILAND) 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. SAMSUNG ELECTRO-MECHANICS(THAILAND)'s block covers 16,777,216 addresses.
What devices use EC9BF3?
Any network device with a MAC address starting EC:9B:F3 was manufactured by or for SAMSUNG ELECTRO-MECHANICS(THAILAND).