Area Code +49-231-(1206000...1206999) located in Dortmund, Nordrhein-Westfalen (NW), more detail is as below. Place International Dialing Code : 49 International Prefix : 00 National Prefix : 0 National Destination Code : 231 Subscriber Number From : 1206000 Subscriber Number To : 1206999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 11 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Telekom Deutschland GmbH Click here to buy Germany Area Code Database Other Information Language Code : de (German) Country Number : 276 (Germany) Country Code : DE (Germany) Region Code : NW Region Name : Nordrhein-Westfalen City : Dortmund Timezone : Europe/Berlin Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 6 Latitude : 51.5200 Longitude : 7.4700 ‹ previous : +49-231-(1205000...1205999) next › : +49-231-(1297000...1297999) Dialling Instructions For trunk calls: 0 231 1206000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 49 231 1206000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1206000 ~ 1206999 (Count: 1,000) Example: +49-231-1206000 / 0049-231-1206000 (0231-1206000 / 0-231-1206000) +49-231-1206001 / 0049-231-1206001 (0231-1206001 / 0-231-1206001) +49-231-1206002 / 0049-231-1206002 (0231-1206002 / 0-231-1206002) +49-231-1206003 / 0049-231-1206003 (0231-1206003 / 0-231-1206003) +49-231-1206004 / 0049-231-1206004 (0231-1206004 / 0-231-1206004) ...+49-231-xxxxxxx / 0049-231-xxxxxxx (0231-xxxxxxx / 0-231-xxxxxxx) ...+49-231-1206995 / 0049-231-1206995 (0231-1206995 / 0-231-1206995) +49-231-1206996 / 0049-231-1206996 (0231-1206996 / 0-231-1206996) +49-231-1206997 / 0049-231-1206997 (0231-1206997 / 0-231-1206997) +49-231-1206998 / 0049-231-1206998 (0231-1206998 / 0-231-1206998) +49-231-1206999 / 0049-231-1206999 (0231-1206999 / 0-231-1206999)