MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:30:68:00:00:00 /24
Vendor addressDAITOH BLDG. 4F 3-32-1 JAPAN JP 171-0033
Country🇯🇵 Japan
RegisteredSep 8, 2000
Block range00:30:68:00:00:00– 00:30:68: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.
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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00:30:67:00:00:00 /24
BIOSTAR Microtech Int'l Corp.
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00:30:69:00:00:00 /24
IMPACCT TECHNOLOGY CORP.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
CYBERNETICS TECH. CO., LTD. holds 1 registered blocks in the IEEE registry, ranking #9,582 of 33,427 organizations by block count.