MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD0:9F:D9:40:00:00 /28
Vendor addressRm.B,6th Fl., No.5, Caoxi Rd.251 Shanghai Shanghai CN 200235
Country🇨🇳 China
RegisteredMar 18, 2021
Block rangeD0:9F:D9:40:00:00– D0:9F:D9:4F: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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D0:9F:D9:30:00:00 /28
GS Yuasa International Ltd.
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D0:9F:D9:50:00:00 /28
Carbon Mobile GmbH
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Poten (Shanghai) Technology Co.,Ltd. holds 1 registered blocks in the IEEE registry, ranking #23,287 of 33,427 organizations by block count.