For calls to Heeren please enter the dialling code 03931 and then the number of the person or household you want to reach.
| 03931 | Phone Code: Classic spelling |
|---|---|
| +493931 | With german country code +49 |
| +49(0)3931 | With country code +49 and optional 0 |
| 00493931 | With country code 0049 |
| (03931) | Telephone code in brackets |
| 03931- | With hyphen as separator to the phone number |
| 03931/ | With slash as a separator to the phone number |