MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:D8:A0:00 /36
Vendor address629 Aljunied Road #06-06 Cititech Industrial Building Singapore SG 389838
Country🇸🇬 Singapore
RegisteredJul 2, 2025
Block range8C:1F:64:D8:A0:00– 8C:1F:64:D8:AF: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
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8C:1F:64:D8:80:00 /36
University of Geneva - Department of Particle Physics
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8C:1F:64:D8:B0:00 /36
I/O Controls
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Boon Arthur Engineering Pte Ltd holds 1 registered blocks in the IEEE registry, ranking #7,256 of 33,421 organizations by block count.