MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:2F:00:00 /36
Vendor address35 Tansu-machi Shinjuku-ku Tokyo JP 1620833
Country🇯🇵 Japan
RegisteredFeb 17, 2023
Block range8C:1F:64:2F:00:00– 8C:1F:64:2F: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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Switch Science, Inc. holds 1 registered blocks in the IEEE registry, ranking #28,785 of 33,427 organizations by block count.