What this means
The IEEE assigned the MA-M block EC74CD8 to TRANS AUDIO VIDEO SRL. 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:74:CD:8, it is TRANS AUDIO VIDEO SRL hardware.
Frequently Asked Questions
Who owns MAC prefix EC74CD8?
EC74CD8 is registered to TRANS AUDIO VIDEO SRL in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. TRANS AUDIO VIDEO SRL's block covers 1,048,576 addresses.
What devices use EC74CD8?
Any network device with a MAC address starting EC:74:CD:8 was manufactured by or for TRANS AUDIO VIDEO SRL.