Zhengzhou coal machinery hydraulic electric control 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.

Prefix0C:5C:B5:A0:00:00 /28

Vendor address167 Jingkai 9th Street, Zhengzhou Economic Development Zone Zhengzhou CN 45000

RegisteredJan 29, 2021

Block range0C:5C:B5:A0:00:00– 0C:5C:B5:AF: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

0C:5C:B5:A0:00:00 0C:5C:B5:A7:FF:FF 0C:5C:B5:AF:FF:FF

Where this block sits

Previous 0C:5C:B5:90:00:00 /28 Colordeve International Next 0C:5C:B5:B0:00:00 /28 ADI Global Distribution

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

Zhengzhou coal machinery hydraulic electric control Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #33,259 of 33,427 organizations by block count.