The area code (phone code) 07742 is assigned to 3 locations in Germany. Mainly you reach landlines in Klettgau (Baden-Württemberg).
| Dialling Code | City |
|---|---|
| 07742 | Klettgau |
| 07742 | Hohentengen am Hochrhein |
| 07742 | Dettighofen |
Note for calls from abroad: In addition to the German country code (+49 or 0049) you can omit the foregoing zero of the dialling code for Klettgau. So you can dial +497742... and add the number of the phone line you want to reach.