MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:04:B0:00:00:00 /24
Vendor address9Fl. TaeKyoung Bldg., R.O. KR KOREA
Country🇰🇷 South Korea
RegisteredDec 4, 2000
Block range00:04:B0:00:00:00– 00:04:B0: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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00:04:AF:00:00:00 /24
Digital Fountain, Inc.
Next
00:04:B1:00:00:00 /24
Signal Technology, Inc.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ELESIGN Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #11,479 of 33,427 organizations by block count.