| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|
| 2304 | Dortmund | North Rhine-Westphalia | 588,462 | Germany | Europe/Berlin |
| 2331 | Hagen | North Rhine-Westphalia | 198,972 | Germany | Europe/Berlin |
| 2334 | Hagen | North Rhine-Westphalia | 198,972 | Germany | Europe/Berlin |
| 2337 | Hagen | North Rhine-Westphalia | 198,972 | Germany | Europe/Berlin |
| 2355 | Hagen | North Rhine-Westphalia | 198,972 | Germany | Europe/Berlin |
| 2374 | Iserlohn | North Rhine-Westphalia | 97,910 | Germany | Europe/Berlin |
| 4192 | Hagen | North Rhine-Westphalia | 198,972 | Germany | Europe/Berlin |
| 4836 | Hennstedt | Schleswig-Holstein | 1,852 | Germany | Europe/Berlin |