The Postal Address Code is a unique identifier for the current version of an address in Austria. For example, the following address returns a Postal Address Code value of 105176447:

An Austria address has a Postal Address Code Indentifier AT value when the address identifies a mailbox that receives mail at another address. For example, a building at an intersection of two streets might have an address on both streets and might specify one of the addresses as the mailbox address.

A street address that does not receive mail has a Postal Address Code value and a Postal Address Code Indentifier AT value. The Postal Address Code Indentifier AT value is the Postal Address Code of the Ident address that receives the mail. The postal carrier delivers mail to the address that the Postal Address Code Indentifier AT identifies.

The following table lists street addresses that identify a single mail destination:

Address	Postal Address Code AT	Postal Address Code Indentifier AT
Hauptplatz 4 8010 Graz AUT	100001915	100004254
Neue-Welt-Gasse 2 8010 Graz AUT	100004254	Not applicable

The address "Hauptplatz 4" does not receive mail because the mailbox is at another address at the same location. The building receives mail at “Neue-Welt-Gasse 2” and therefore “Neue-Welt-Gasse 2” is the Ident address. The Postal Address Code Indentifier AT is the Postal Address Code AT of the address that receives the mail. The Postal Address Code value for the Ident address is 100004254.