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:C9:8B:A0:00:00 /28
Vendor addressIndustrieweg-Zuid 1320 Zonhoven Limburg BE 3520
Country🇧🇪 Belgium
RegisteredMar 29, 2025
Block range04:C9:8B:A0:00:00– 04:C9:8B:AF: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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04:C9:8B:90:00:00 /28
Beijing BOE optoelectronic Technology Co. Ltd
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04:C9:8B:B0:00:00 /28
Freedom Factory
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Secury360 holds 2 registered blocks in the IEEE registry, ranking #2,923 of 33,427 organizations by block count.
Other blocks registered to Secury360