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| Postal Code | |
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| A B C D E F G H I L M N P R S T U |
| Country | From | To | Customs airport | Code |
| Austria | 1000 | 3999 | Vienna | VIE |
| 4000 | 4999 | Linz | LNZ | |
| 5000 | 5999 | Salzburg | SZG | |
| 6000 | 6999 | Innsbruck | INN | |
| 7000 | 7999 | Vienna | VIE | |
| 8000 | 8999 | Graz | GRZ | |
| 9000 | 9999 | Klagenfurt | KLU |
