MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:06:E0:00 /36
Vendor addressAvenida Somosierra 12. Portal A. Planta 1ª. Letra I San Sebastián de los Reyes Madrid ES 28703
Country🇪🇸 Spain
RegisteredJan 15, 2026
Block range8C:1F:64:06:E0:00– 8C:1F:64:06:EF: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.
INTERNET PROTOCOLO LOGICA SL holds 10 registered blocks in the IEEE registry, ranking #304 of 33,421 organizations by block count.
Other blocks registered to INTERNET PROTOCOLO LOGICA SL