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:C1:40:00:00 /28
Vendor addressUnit 5B 706 Lorimer Street Port Melbourne Victoria AU 3207
Country🇦🇺 Australia
RegisteredMay 21, 2026
Block range0C:0E:C1:40:00:00– 0C:0E:C1:4F: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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0C:0E:C1:30:00:00 /28
Lupa Tecnologia e Sistemas Ltda
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0C:0E:C1:50:00:00 /28
Micron Systems
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
SWANN COMMUNICATIONS PTY LTD holds 2 registered blocks in the IEEE registry, ranking #3,174 of 33,421 organizations by block count.