There are no 9-digit telephone area codes, anywhere in the world. If you mean your 9-digit U.S. ZIP Code (postal code), try the related link.
The whole point of the 9-digit ZIP Code is that it is more specific than a 5-digit ZIP Code. Thus, with only a very few special exceptions, each 5-digit ZIP Code has hundreds or even thousands of different 9-digit ZIP Codes.
9*9*9 = 729
755.00
The ZIP code for the White House is 20500.
376784045
07057-1914
Yes they can.
1111111115
Beech Island, SC
i would like a list all possible 4 digit combination using 0-9
60126-4232