The area code (phone code) 02421 is assigned to 2 locations in Germany. Mainly you reach landlines in Düren, Rheinland (Nordrhein-Westfalen).
| Dialling Code | City |
|---|---|
| 02421 | Düren, Rheinland |
| 02421 | Merzenich, Kreis Düren |
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 Düren, Rheinland. So you can dial +492421... and add the number of the phone line you want to reach.