MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixE0:23:3B:40:00:00 /28
Vendor address6F, 619, 42, Changeop-ro, Sujeong-gu, Seongnam-si Gyeonggi-do KR 13449
Country🇰🇷 South Korea
RegisteredAug 15, 2025
Block rangeE0:23:3B:40:00:00– E0:23:3B:4F:FF:FF
Address capacity1,048,576
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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
The KIE holds 1 registered blocks in the IEEE registry, ranking #29,899 of 33,421 organizations by block count.