For calls to Ulm (Donau) please enter the dialling code 0731 and then the number of the person or household you want to reach.
| 0731 | Phone Code: Classic spelling |
|---|---|
| +49731 | With german country code +49 |
| +49(0)731 | With country code +49 and optional 0 |
| 0049731 | With country code 0049 |
| (0731) | Telephone code in brackets |
| 0731- | With hyphen as separator to the phone number |
| 0731/ | With slash as a separator to the phone number |