MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:5C:80:00 /36
Vendor address1-13-13 Nihonbashi Bakujrocho, Chuo-Ku Tokyo JP 103-0002
Country🇯🇵 Japan
Block range8C:1F:64:5C:80:00– 8C:1F:64:5C:8F: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
Previous
8C:1F:64:5C:60:00 /36
Systems With Intelligence Inc.
Next
8C:1F:64:5C:90:00 /36
Abbott Diagnostics Technologies AS
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
WOTA Corp. holds 1 registered blocks in the IEEE registry, ranking #32,545 of 33,498 organizations by block count.