The area code (phone code) 03321 is assigned to 2 locations in Germany. Mainly you reach landlines in Nauen, Havelland (Brandenburg).
| Dialling Code | City |
|---|---|
| 03321 | Nauen, Havelland |
| 03321 | Retzow bei Nauen |
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 Nauen, Havelland. So you can dial +493321... and add the number of the phone line you want to reach.