What does NUN stand for?

Network User Name - Telecommunications (OSI)

New Users Network (XSAL)

Nunasi-Central Airlines Ltd. - Canada - ICAO designator (FAAC)

Nung - Language code (ETLW)

Nunn Plastics, Bloomington, IL - Manufacturer code for watercraft hull identification number (USCG)

Nuveen New York Quality Income Municipal - NYSE symbol (SPSG)

Nuveen NY Qual Income Muni - NYSE symbol

Pensacola, FL - Location identifier - FAA (FAAL)