For calls to Groß Grönau please enter the dialling code 04509 and then the number of the person or household you want to reach.
| 04509 | Phone Code: Classic spelling |
|---|---|
| +494509 | With german country code +49 |
| +49(0)4509 | With country code +49 and optional 0 |
| 00494509 | With country code 0049 |
| (04509) | Telephone code in brackets |
| 04509- | With hyphen as separator to the phone number |
| 04509/ | With slash as a separator to the phone number |