MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix88:5D:90:40:00:00 /28
Vendor address2nd Floor, 6 Bldg, Guannan Fuxing Medical Park, Wuhan Hubei CN 430074
Country🇨🇳 China
RegisteredOct 16, 2015
Block range88:5D:90:40:00:00– 88:5D:90:4F: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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88:5D:90:30:00:00 /28
CPAC Systems
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88:5D:90:50:00:00 /28
Shenzhen JingHanDa Electronics Co.Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Wuhan Strong Electronics Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #32,533 of 33,427 organizations by block count.