Area Code +49-231-(1204000...1204999) 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 : 1204000 Subscriber Number To : 1204999 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-(1087000...1087999) next › : +49-231-(1205000...1205999) Dialling Instructions For trunk calls: 0 231 1204000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 49 231 1204000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1204000 ~ 1204999 (Count: 1,000) Example: +49-231-1204000 / 0049-231-1204000 (0231-1204000 / 0-231-1204000) +49-231-1204001 / 0049-231-1204001 (0231-1204001 / 0-231-1204001) +49-231-1204002 / 0049-231-1204002 (0231-1204002 / 0-231-1204002) +49-231-1204003 / 0049-231-1204003 (0231-1204003 / 0-231-1204003) +49-231-1204004 / 0049-231-1204004 (0231-1204004 / 0-231-1204004) ...+49-231-xxxxxxx / 0049-231-xxxxxxx (0231-xxxxxxx / 0-231-xxxxxxx) ...+49-231-1204995 / 0049-231-1204995 (0231-1204995 / 0-231-1204995) +49-231-1204996 / 0049-231-1204996 (0231-1204996 / 0-231-1204996) +49-231-1204997 / 0049-231-1204997 (0231-1204997 / 0-231-1204997) +49-231-1204998 / 0049-231-1204998 (0231-1204998 / 0-231-1204998) +49-231-1204999 / 0049-231-1204999 (0231-1204999 / 0-231-1204999)