MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix04:A1:6F:90:00:00 /28
Vendor addressA2(Block 7), Liangjiang Semiconductor Industrial Park, Shuitu Street, Beibei District, Chongqing CN 400000
Country🇨🇳 China
RegisteredFeb 13, 2025
Block range04:A1:6F:90:00:00– 04:A1:6F: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.
Chongqing Jinmei Automotive Electronics co.,Ltd. holds 1 registered blocks in the IEEE registry, ranking #8,378 of 33,421 organizations by block count.