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+49-231-(2279000...2279999): Dortmund, Nordrhein-Westfalen (NW) Read more about +49-231-(2279000...2279999)
+49-511-(9749000...9749999): Hannover, Niedersachsen (NI) Read more about +49-511-(9749000...9749999)
+49-69-(27159000...27159999): Frankfurt am Main, Hessen (HE) Read more about +49-69-(27159000...27159999)
+49-711-(9139000...9139999): Stuttgart, Baden-Württemberg (BW) Read more about +49-711-(9139000...9139999)