What this means
The IEEE assigned the MA-M block 4C74A76 to ABB LV Installation Materials Co., Ltd. Beijing. 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 4C:74:A7:6, it is ABB LV Installation Materials Co., Ltd. Beijing hardware.
Frequently Asked Questions
Who owns MAC prefix 4C74A76?
4C74A76 is registered to ABB LV Installation Materials Co., Ltd. Beijing 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. ABB LV Installation Materials Co., Ltd. Beijing's block covers 1,048,576 addresses.
What devices use 4C74A76?
Any network device with a MAC address starting 4C:74:A7:6 was manufactured by or for ABB LV Installation Materials Co., Ltd. Beijing.