MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixBC:2B:1E:00:00:00 /24
Vendor addressCRESYN B/D, Gangnam-daero 107-gil, Seocho-gu, Seoul Seoul CRESYN B/D, Gangnam-daero 107-gil KR 06254
Country🇰🇷 South Korea
RegisteredNov 24, 2025
Block rangeBC:2B:1E:00:00:00– BC:2B:1E: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.
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Example addresses in this block
Where this block sits
Cresyn Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #9,383 of 33,427 organizations by block count.