MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixC4:A1:0E:C0:00:00 /28
Vendor addressKerkeplaat 12 Dordrecht NL 3313LC
Country🇳🇱 Netherlands
RegisteredMar 16, 2022
Block rangeC4:A1:0E:C0:00:00– C4:A1:0E:CF: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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C4:A1:0E:B0:00:00 /28
Clinton Electronics Corporation
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C4:A1:0E:D0:00:00 /28
Connectlab SRL
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Focus-on holds 1 registered blocks in the IEEE registry, ranking #12,872 of 33,421 organizations by block count.