MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD0:A0:11:10:00:00 /28
Vendor addressNo. 489, North Xizang Road, Shanghai Shanghai Shanghai CN 200071
Country🇨🇳 China
RegisteredDec 20, 2023
Block rangeD0:A0:11:10:00:00– D0:A0:11:1F: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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D0:A0:11:00:00:00 /28
SIONYX, LLC
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D0:A0:11:20:00:00 /28
Shanghai Hongqia Industry and Trade Co., LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shanghai Railway Communication Co. Ltd. holds 1 registered blocks in the IEEE registry, ranking #26,019 of 33,427 organizations by block count.