MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix78:D8:00:C0:00:00 /28
Vendor address301,3/F,Longtangge,1183 Liuxian Avenue,Nanshan Shenzhen Guangdong CN 518055
Country🇨🇳 China
RegisteredApr 23, 2017
Block range78:D8:00:C0:00:00– 78:D8:00:CF: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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78:D8:00:B0:00:00 /28
Maddalena S.p.A.
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78:D8:00:D0:00:00 /28
Korea Micro Wireless Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen Chenzhuo Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #26,285 of 33,427 organizations by block count.