MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixB4:4D:43:D0:00:00 /28
Vendor addressBuilding 5A, Shenzhen Bay Eco- Technology Park, Yuehai Street, Nanshan District, Shenzhen Shenzhen CN 518000
Country🇨🇳 China
RegisteredMar 8, 2023
Block rangeB4:4D:43:D0:00:00– B4:4D:43:DF: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
Where this block sits
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B4:4D:43:C0:00:00 /28
SHENZHEN KOSKY TECHNOLOGY CO.,LTD.
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B4:4D:43:E0:00:00 /28
GearUP Portal Pte. Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen CreatLentem Technology Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #26,325 of 33,427 organizations by block count.