According to Germany telephone number rules, 0231 belongs to Dortmund(city) in Nordrhein-Westfalen(state), furthermore, we also provide some other information, such as the phone number type is landline, thelatitude and longitude is 52.500000 and 13.366667. Please pay attention that the detail we provide only as a reference, the details may be not complete, the latitude and longitude likely to have deviation.

Here are some corresponding phone numbers.