MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixA4:59:D3:40:00:00 /28
Vendor addressA-311, Higgsutower, 184, Jungbu-daero, Giheung-gu Yongin-si Gyeonggi-do KR 17095
Country🇰🇷 South Korea
RegisteredDec 14, 2024
Block rangeA4:59:D3:40:00:00– A4:59:D3:4F: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
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A4:59:D3:30:00:00 /28
SoftEnergy Controls Inc.
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A4:59:D3:50:00:00 /28
Bettear - Accessibility Technologies Development Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
GRE SYSTEM INC. holds 2 registered blocks in the IEEE registry, ranking #2,114 of 33,427 organizations by block count.
Other blocks registered to GRE SYSTEM INC.