Plus One Japan 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.

PrefixA4:3B:FA:A0:00:00 /28

Vendor addressStoria Akasaka 410, Minato-ku Tokyo JP 1080052

RegisteredOct 16, 2015

Block rangeA4:3B:FA:A0:00:00– A4:3B:FA: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

A4:3B:FA:A0:00:00 A4:3B:FA:A7:FF:FF A4:3B:FA:AF:FF:FF

Where this block sits

Previous A4:3B:FA:90:00:00 /28 SHEN ZHEN PASUN TECH CO.LTD. Next A4:3B:FA:B0:00:00 /28 ALSTOM Strongwish (Shenzhen) Co., Ltd

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

Plus One Japan Ltd. holds 1 registered blocks in the IEEE registry, ranking #23,164 of 33,421 organizations by block count.