MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix00:55:DA:90:00:00 /28
Vendor addressD3 Innovation Industrial Park, No. 800 Wangjiang West Road, Hefei Hi-tech Industrial Development Zone, Hefei City, Anhui Province, China Hefei Anhui CN 230088
Country🇨🇳 China
RegisteredOct 16, 2015
Block range00:55:DA:90:00:00– 00:55:DA:9F: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.
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Example addresses in this block
Where this block sits
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Quantum Communication Technology Co., Ltd.,Anhui holds 1 registered blocks in the IEEE registry, ranking #23,928 of 33,427 organizations by block count.