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MAC prefix 98:EF:9B

Assigned by the IEEE to OHSUNG.

Prefix
98:EF:9B   98-EF-9B   98EF.9B
Block type
MA-L (16,777,216 addresses)
Address range
98:EF:9B:00:00:00 – 98:EF:9B:FF:FF:FF
Organization
OHSUNG
Registered address
335-4,SANHODAERO,GUMI,GYEONG BUK,KOREA, GUMI GYEONG BUK 730-030, KR
Country
South Korea (KR)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 98:EF:9B:00:00:00

OHSUNG holds 11 blocks in total: see all. Source: IEEE Registration Authority public listing.