Green IT Korea Co., Ltd.

MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

PrefixAC:1D:DF:70:00:00 /28

Vendor address1, Gaun-ro 1-gil, Namyangju-si Seoul KR 12263

RegisteredJul 16, 2017

Block rangeAC:1D:DF:70:00:00– AC:1D:DF:7F:FF:FF

Address capacity1,048,576

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Example addresses in this block

AC:1D:DF:70:00:00 AC:1D:DF:77:FF:FF AC:1D:DF:7F:FF:FF

Where this block sits

Previous AC:1D:DF:60:00:00 /28 Shenzheng SenseTime Technology Co. Ltd Next AC:1D:DF:80:00:00 /28 Sichuan Odot Automation System Co.,Ltd.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Green IT Korea Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #13,946 of 33,427 organizations by block count.