MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix9C:F6:DD:20:00:00 /28
Vendor addressNo.9,Shangdi 4th Street,Haidian District Beijing CN 100085
Country🇨🇳 China
RegisteredMay 13, 2018
Block range9C:F6:DD:20:00:00– 9C:F6:DD:2F: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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9C:F6:DD:10:00:00 /28
Ithor IT Co.,Ltd.
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9C:F6:DD:30:00:00 /28
RYEEX Technology Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Beijing Sifang Automation Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #6,699 of 33,421 organizations by block count.