MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:E4:00:00 /36
Vendor addressSuite A, 16th Floor, Tesbury Centre, 24-32 Queen's Road East Hong Kong HK HK
CountryðŸ‡ðŸ‡° Hong Kong
RegisteredFeb 11, 2025
Block range8C:1F:64:E4:00:00– 8C:1F:64:E4:0F: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:E3:F0:00 /36
TELETECH SERVICES
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8C:1F:64:E4:10:00 /36
Grossenbacher Systeme AG
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ThermoG Limited holds 1 registered blocks in the IEEE registry, ranking #29,970 of 33,427 organizations by block count.