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:0E:C1:A0:00:00 /28
Vendor addressHammer Landstraße 45 Neuss DE 41460
Country🇩🇪 Germany
RegisteredMay 19, 2026
Block range0C:0E:C1:A0:00:00– 0C:0E:C1: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.
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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.
Sonoro Audio GmbH holds 1 registered blocks in the IEEE registry, ranking #28,014 of 33,427 organizations by block count.