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| Numbers are for the Heidelberg local area. | |
| Otherwise the following dialing codes apply: | |
| Heidelberg international area code: | +49-6221 |
| Heidelberg national area code: | 06221 |
|
|
| Numbers are for the Heidelberg local area. | |
| Otherwise the following dialing codes apply: | |
| Heidelberg international area code: | +49-6221 |
| Heidelberg national area code: | 06221 |