MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix0C:5C:B5:90:00:00 /28
Vendor address601, block B, Logistics Park, Yihong Road, Yantian village, Fenggang Town, DG, GD, China Dongguan City CN 523702
Country🇨🇳 China
RegisteredJan 30, 2021
Block range0C:5C:B5:90:00:00– 0C:5C:B5:9F: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.
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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0C:5C:B5:80:00:00 /28
Shanghai Kanghai Information System CO.,LTD.
Next
0C:5C:B5:A0:00:00 /28
Zhengzhou coal machinery hydraulic electric control Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Colordeve International holds 1 registered blocks in the IEEE registry, ranking #8,765 of 33,421 organizations by block count.