Area Code +31-50-(8330000...8339999) located in Groningen, Groningen (GR), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 50 Subscriber Number From : 8330000 Subscriber Number To : 8339999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Aldra B.V. Click here to buy Netherlands Area Code Database Other Information Language Code : nl (Dutch) Country Number : 528 (Netherlands) Country Code : NL (Netherlands) Region Code : GR Region Name : Groningen City : Groningen Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 53.2100 Longitude : 6.5700 ‹ previous : +31-50-(8229000...8229999) next › : +31-50-(8500000...8509999) Dialling Instructions For trunk calls: 0 50 8330000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 8330000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8330000 ~ 8339999 (Count: 10,000) Example: +31-50-8330000 / 0031-50-8330000 (050-8330000 / 0-50-8330000) +31-50-8330001 / 0031-50-8330001 (050-8330001 / 0-50-8330001) +31-50-8330002 / 0031-50-8330002 (050-8330002 / 0-50-8330002) +31-50-8330003 / 0031-50-8330003 (050-8330003 / 0-50-8330003) +31-50-8330004 / 0031-50-8330004 (050-8330004 / 0-50-8330004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-8339995 / 0031-50-8339995 (050-8339995 / 0-50-8339995) +31-50-8339996 / 0031-50-8339996 (050-8339996 / 0-50-8339996) +31-50-8339997 / 0031-50-8339997 (050-8339997 / 0-50-8339997) +31-50-8339998 / 0031-50-8339998 (050-8339998 / 0-50-8339998) +31-50-8339999 / 0031-50-8339999 (050-8339999 / 0-50-8339999)