Area Code +49-231-(2280000...2280999) 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 : 2280000 Subscriber Number To : 2280999 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 : Telefonica O2 Germany GmbH und Co . oHG 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-(2279000...2279999) next › : +49-231-(2281000...2281999) Dialling Instructions For trunk calls: 0 231 2280000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 49 231 2280000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2280000 ~ 2280999 (Count: 1,000) Example: +49-231-2280000 / 0049-231-2280000 (0231-2280000 / 0-231-2280000) +49-231-2280001 / 0049-231-2280001 (0231-2280001 / 0-231-2280001) +49-231-2280002 / 0049-231-2280002 (0231-2280002 / 0-231-2280002) +49-231-2280003 / 0049-231-2280003 (0231-2280003 / 0-231-2280003) +49-231-2280004 / 0049-231-2280004 (0231-2280004 / 0-231-2280004) ...+49-231-xxxxxxx / 0049-231-xxxxxxx (0231-xxxxxxx / 0-231-xxxxxxx) ...+49-231-2280995 / 0049-231-2280995 (0231-2280995 / 0-231-2280995) +49-231-2280996 / 0049-231-2280996 (0231-2280996 / 0-231-2280996) +49-231-2280997 / 0049-231-2280997 (0231-2280997 / 0-231-2280997) +49-231-2280998 / 0049-231-2280998 (0231-2280998 / 0-231-2280998) +49-231-2280999 / 0049-231-2280999 (0231-2280999 / 0-231-2280999)