MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:B4:40:00 /36
Vendor address3rd Floor, 94 Sanbon-ro Gunpo-si Gyeonggi-do KR 15847
Country🇰🇷 South Korea
RegisteredNov 13, 2025
Block range8C:1F:64:B4:40:00– 8C:1F:64:B4:4F:FF
Address capacity4,096
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
Previous
8C:1F:64:B4:10:00 /36
STATE GRID INTELLIGENCE TECHNOLOGY CO.,LTD.
Next
8C:1F:64:B4:60:00 /36
PHYGITALL SOLUÇÕES EM INTERNET DAS COISAS
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Samkyung MS holds 1 registered blocks in the IEEE registry, ranking #25,087 of 33,427 organizations by block count.