MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1B:42:00:00:00 /24
Vendor address#715-3 Anyang Megavalley Anyang-Si Gyunggi-Do KR 431-767
Country🇰🇷 South Korea
RegisteredJan 26, 2007
Block range00:1B:42:00:00:00– 00:1B:42: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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00:1B:41:00:00:00 /24
General Infinity Co.,Ltd.
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00:1B:43:00:00:00 /24
Beijing DG Telecommunications equipment Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Wise & Blue holds 1 registered blocks in the IEEE registry, ranking #32,350 of 33,427 organizations by block count.