Main Number: (973)724-4021
All Picatinny Arsenal
phone numbers have the area code (973).
All DSN phone numbers begin with
880.
To call to another Arsenal number dial 4 then the four digit
extension.
To dial any commercial number from the Arsenal dial 99 and the 10
digit number.
To dial any CONUS DSN number dial 94 then 312 and
the seven digit DSN number.
To dial any OCONUS DSN dial 94 and the 10 digit
number.