What does fdn stand for?

Foundation (BEE)

Federation - Telegraphy (PCTE)

Field Designator Number - Air Force (AFM)

File Definition Name (SAUS)

File Distribution Network - A warez

Ford Canoe Co., Payson, AZ - Manufacturer code for watercraft hull identification number (USCG)

Foreign Directory Name - Telecommunications (TEL)

Foundation (KSC)

Frente Democratico Nacional - Electoral Alliance - Mexico (EY)

Fuerza Democratica Nicaraguense - Nicaraguan Democratic Force (PD)

Future Digital Network (MCD)

Fonodan - Record label - Denmark

Foundation (AL)