MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixBC:DF:E1:40:00:00 /28
Vendor addressc/o Westras, Kopparbergsv 6 Västerås SE 72213
Country🇸🇪 Sweden
RegisteredJan 9, 2025
Block rangeBC:DF:E1:40:00:00– BC:DF:E1:4F: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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BC:DF:E1:30:00:00 /28
System Industrie Electronic GmbH
Next
BC:DF:E1:50:00:00 /28
Enli Inc.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Ochno AB holds 2 registered blocks in the IEEE registry, ranking #2,657 of 33,427 organizations by block count.
Other blocks registered to Ochno AB