MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix18:C3:F4:10:00:00 /28
Vendor addressEbermannstädter Str. 8 Forchheim Bayern DE 91301
Country🇩🇪 Germany
RegisteredMay 25, 2022
Block range18:C3:F4:10:00:00– 18:C3:F4:1F: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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18:C3:F4:00:00:00 /28
Scati Labs, S.A.
Next
18:C3:F4:20:00:00 /28
Changsha Kiloview Electronics Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Enertex Bayern GmbH holds 3 registered blocks in the IEEE registry, ranking #1,033 of 33,421 organizations by block count.
Other blocks registered to Enertex Bayern GmbH