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MAC prefix 80:3F:D6

Assigned by the IEEE to bytes at work AG.

Prefix
80:3F:D6   80-3F-D6   803F.D6
Block type
MA-L (16,777,216 addresses)
Address range
80:3F:D6:00:00:00 – 80:3F:D6:FF:FF:FF
Organization
bytes at work AG
Registered address
Konradstrasse 15, Winterthur ZH 8400, CH
Country
Switzerland (CH)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 80:3F:D6:00:00:00

bytes at work AG holds 1 block in total: see all. Source: IEEE Registration Authority public listing.