Area Code +31-50-(4090000...4099999) 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 : 4090000 Subscriber Number To : 4099999 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-(4060000...4069999) next › : +31-50-(4400000...4400999) Dialling Instructions For trunk calls: 0 50 4090000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 4090000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4090000 ~ 4099999 (Count: 10,000) Example: +31-50-4090000 / 0031-50-4090000 (050-4090000 / 0-50-4090000) +31-50-4090001 / 0031-50-4090001 (050-4090001 / 0-50-4090001) +31-50-4090002 / 0031-50-4090002 (050-4090002 / 0-50-4090002) +31-50-4090003 / 0031-50-4090003 (050-4090003 / 0-50-4090003) +31-50-4090004 / 0031-50-4090004 (050-4090004 / 0-50-4090004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-4099995 / 0031-50-4099995 (050-4099995 / 0-50-4099995) +31-50-4099996 / 0031-50-4099996 (050-4099996 / 0-50-4099996) +31-50-4099997 / 0031-50-4099997 (050-4099997 / 0-50-4099997) +31-50-4099998 / 0031-50-4099998 (050-4099998 / 0-50-4099998) +31-50-4099999 / 0031-50-4099999 (050-4099999 / 0-50-4099999)