MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix78:D4:F1:30:00:00 /28
Vendor addressul. Nowy Kisielin - Wysockiego 8 Zielona Gora PL 66-002
Country🇵🇱 Poland
RegisteredNov 20, 2020
Block range78:D4:F1:30:00:00– 78:D4:F1:3F: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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Ekoenergetyka - Polska S.A. holds 1 registered blocks in the IEEE registry, ranking #11,352 of 33,421 organizations by block count.