MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix08:EF:3B:00:00:00 /24
Vendor address6F. Samho Center B Bldg., 275-6,Yangjae-Dong, Secho-Ku,Seoul Seoul KR 137-941
Country🇰🇷 South Korea
RegisteredMay 24, 2013
Block range08:EF:3B:00:00:00– 08:EF:3B: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
MCS Logic Inc. holds 4 registered blocks in the IEEE registry, ranking #774 of 33,427 organizations by block count.
Other blocks registered to MCS Logic Inc.