Area Code +31-50-(3000000...3009999) 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 : 3000000 Subscriber Number To : 3009999 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 : Radik 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-(2800000...2809999) next › : +31-50-(3010000...3019999) Dialling Instructions For trunk calls: 0 50 3000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 3000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3000000 ~ 3009999 (Count: 10,000) Example: +31-50-3000000 / 0031-50-3000000 (050-3000000 / 0-50-3000000) +31-50-3000001 / 0031-50-3000001 (050-3000001 / 0-50-3000001) +31-50-3000002 / 0031-50-3000002 (050-3000002 / 0-50-3000002) +31-50-3000003 / 0031-50-3000003 (050-3000003 / 0-50-3000003) +31-50-3000004 / 0031-50-3000004 (050-3000004 / 0-50-3000004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-3009995 / 0031-50-3009995 (050-3009995 / 0-50-3009995) +31-50-3009996 / 0031-50-3009996 (050-3009996 / 0-50-3009996) +31-50-3009997 / 0031-50-3009997 (050-3009997 / 0-50-3009997) +31-50-3009998 / 0031-50-3009998 (050-3009998 / 0-50-3009998) +31-50-3009999 / 0031-50-3009999 (050-3009999 / 0-50-3009999)