MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:8C:90:00 /36
Vendor addressAv Honorio Alvares Penteado, 97 - Galpao 77 Santana de Parnaiba SP BR 06543-320
Country🇧🇷 Brazil
RegisteredFeb 24, 2026
Block range8C:1F:64:8C:90:00– 8C:1F:64:8C:9F: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
Previous
8C:1F:64:8C:80:00 /36
Potter Electric Signal Co. LLC
Next
8C:1F:64:8C:A0:00 /36
YUYAMA MFG Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
RoboCore Tecnologia holds 2 registered blocks in the IEEE registry, ranking #2,855 of 33,421 organizations by block count.
Other blocks registered to RoboCore Tecnologia