718th Research Institute of CSIC

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.

PrefixA0:3E:6B:80:00:00 /28

Vendor addressNo.17 Zhanlan Road Handan City Hebei CN 056027

RegisteredOct 16, 2015

Block rangeA0:3E:6B:80:00:00– A0:3E:6B:8F: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

A0:3E:6B:80:00:00 A0:3E:6B:87:FF:FF A0:3E:6B:8F:FF:FF

Where this block sits

Previous A0:3E:6B:70:00:00 /28 SinoGrid Software Systems Inc. Next A0:3E:6B:90:00:00 /28 Incogniteam Ltd.

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

718th Research Institute of CSIC holds 1 registered blocks in the IEEE registry, ranking #3,613 of 33,421 organizations by block count.