MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:D8:40:00 /36
Vendor address4056 Blakie Road London ON CA N6L1P7
Country🇨🇦 Canada
RegisteredAug 6, 2026
Block range8C:1F:64:D8:40:00– 8C:1F:64:D8:4F: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:D8:20:00 /36
Shanghai Jarue Microsystem.CO.,Ltd.
Next
8C:1F:64:D8:70:00 /36
EXPERIO TECH PRIVATE LIMITED
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
OES Inc. holds 3 registered blocks in the IEEE registry, ranking #1,206 of 33,427 organizations by block count.
Other blocks registered to OES Inc.