Area Code +31-50-(5010000...5019999) 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 : 5010000 Subscriber Number To : 5019999 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 : KPN 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-(5000000...5009999) next › : +31-50-(5020000...5029999) Dialling Instructions For trunk calls: 0 50 5010000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 5010000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5010000 ~ 5019999 (Count: 10,000) Example: +31-50-5010000 / 0031-50-5010000 (050-5010000 / 0-50-5010000) +31-50-5010001 / 0031-50-5010001 (050-5010001 / 0-50-5010001) +31-50-5010002 / 0031-50-5010002 (050-5010002 / 0-50-5010002) +31-50-5010003 / 0031-50-5010003 (050-5010003 / 0-50-5010003) +31-50-5010004 / 0031-50-5010004 (050-5010004 / 0-50-5010004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-5019995 / 0031-50-5019995 (050-5019995 / 0-50-5019995) +31-50-5019996 / 0031-50-5019996 (050-5019996 / 0-50-5019996) +31-50-5019997 / 0031-50-5019997 (050-5019997 / 0-50-5019997) +31-50-5019998 / 0031-50-5019998 (050-5019998 / 0-50-5019998) +31-50-5019999 / 0031-50-5019999 (050-5019999 / 0-50-5019999)