MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:3C:70:00 /36
Vendor address1 Elizabeth Macarthur Drive, Bella Vista NSW 2153 Australia NSW AT 2153
Country🇦🇹 Austria
RegisteredNov 24, 2025
Block range8C:1F:64:3C:70:00– 8C:1F:64:3C: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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
RESMED PTY LTD holds 1 registered blocks in the IEEE registry, ranking #24,477 of 33,421 organizations by block count.