MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix00:1B:C5:09:F0:00 /36
Vendor addressul. Gaudiego 7 Gliwice Śląskie PL 44-100
Country🇵🇱 Poland
RegisteredMay 20, 2013
Block range00:1B:C5:09:F0:00– 00:1B:C5:09:FF:FF
Address capacity4,096
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.
ENTE Sp. z o.o. holds 2 registered blocks in the IEEE registry, ranking #1,976 of 33,421 organizations by block count.
Other blocks registered to ENTE Sp. z o.o.