MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:0C:21:00:00:00 /24
Vendor address3-14-1 Hiyoshi, Kohoku-ku Yokohama Kanagawa JP 223-8522
Country🇯🇵 Japan
RegisteredJan 21, 2003
Block range00:0C:21:00:00:00– 00:0C:21:FF:FF:FF
Address capacity16,777,216
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.
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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.
Faculty of Science and Technology, Keio University holds 1 registered blocks in the IEEE registry, ranking #12,468 of 33,427 organizations by block count.