Area Code +31-50-(3610000...3619999) 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 : 3610000 Subscriber Number To : 3619999 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-(3600000...3609999) next › : +31-50-(3620000...3629999) Dialling Instructions For trunk calls: 0 50 3610000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 3610000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3610000 ~ 3619999 (Count: 10,000) Example: +31-50-3610000 / 0031-50-3610000 (050-3610000 / 0-50-3610000) +31-50-3610001 / 0031-50-3610001 (050-3610001 / 0-50-3610001) +31-50-3610002 / 0031-50-3610002 (050-3610002 / 0-50-3610002) +31-50-3610003 / 0031-50-3610003 (050-3610003 / 0-50-3610003) +31-50-3610004 / 0031-50-3610004 (050-3610004 / 0-50-3610004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-3619995 / 0031-50-3619995 (050-3619995 / 0-50-3619995) +31-50-3619996 / 0031-50-3619996 (050-3619996 / 0-50-3619996) +31-50-3619997 / 0031-50-3619997 (050-3619997 / 0-50-3619997) +31-50-3619998 / 0031-50-3619998 (050-3619998 / 0-50-3619998) +31-50-3619999 / 0031-50-3619999 (050-3619999 / 0-50-3619999)