What does DOK stand for?

Danok - NCIC firearms make code (NCIC)

De Odeon Kring - The Odeon Club, for homosexuals - Holland

Dondo - Language code (ETLW)

Donetsk - Former USSR - Airport symbol - Obsolete (OAG)

Order of the Daughters of the King (EA)

Wee Big Boat Builders, Wapello, IA - Manufacturer code for watercraft hull identification number (USCG)