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MAC prefix D4:D9:19

Assigned by the IEEE to GoPro.

Prefix
D4:D9:19   D4-D9-19   D4D9.19
Block type
MA-L (16,777,216 addresses)
Address range
D4:D9:19:00:00:00 – D4:D9:19:FF:FF:FF
Organization
GoPro
Registered address
3000 Clearview Way, San Mateo CA 94402, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up D4:D9:19:00:00:00

GoPro holds 7 blocks in total: see all. Source: IEEE Registration Authority public listing.