MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:12:70:00 /36
Vendor address5F., No.15, Ln. 48, Xingshan Rd., Neihu Dist., Taipei City TW 114
Country🇹🇼 Taiwan
RegisteredMar 13, 2025
Block range8C:1F:64:12:70:00– 8C:1F:64:12:7F: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:64:12:60:00 /36
Harvest Technology Pty Ltd
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8C:1F:64:12:80:00 /36
YULISTA INTEGRATED SOLUTION
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Retronix Technology Inc. holds 1 registered blocks in the IEEE registry, ranking #24,499 of 33,427 organizations by block count.