The area code (phone code) 0375 is assigned to 4 locations in Germany. Mainly you reach landlines in Zwickau (Sachsen).
|0375||Reinsdorf bei Zwickau|
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 Zwickau. So you can dial +49375... and add the number of the phone line you want to reach.