What this means
The IEEE assigned the MA-M block AC1DDF7 to Green IT Korea Co., Ltd.. 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 AC:1D:DF:7, it is Green IT Korea Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix AC1DDF7?
AC1DDF7 is registered to Green IT Korea Co., Ltd. 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. Green IT Korea Co., Ltd.'s block covers 1,048,576 addresses.
What devices use AC1DDF7?
Any network device with a MAC address starting AC:1D:DF:7 was manufactured by or for Green IT Korea Co., Ltd..