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MAC prefix 28:38:CF

Assigned by the IEEE to Gen2wave.

Prefix
28:38:CF   28-38-CF   2838.CF
Block type
MA-L (16,777,216 addresses)
Address range
28:38:CF:00:00:00 – 28:38:CF:FF:FF:FF
Organization
Gen2wave
Registered address
Gumi-dong, Bundang-gu, Seongnam-si Gyeonggi-do 463-741, KR
Country
South Korea (KR)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 28:38:CF:00:00:00

Gen2wave holds 1 block in total: see all. Source: IEEE Registration Authority public listing.