Area Code +31-50-(3090000...3099999) 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 : 3090000 Subscriber Number To : 3099999 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-(3080000...3089999) next › : +31-50-(3110000...3119999) Dialling Instructions For trunk calls: 0 50 3090000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 3090000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3090000 ~ 3099999 (Count: 10,000) Example: +31-50-3090000 / 0031-50-3090000 (050-3090000 / 0-50-3090000) +31-50-3090001 / 0031-50-3090001 (050-3090001 / 0-50-3090001) +31-50-3090002 / 0031-50-3090002 (050-3090002 / 0-50-3090002) +31-50-3090003 / 0031-50-3090003 (050-3090003 / 0-50-3090003) +31-50-3090004 / 0031-50-3090004 (050-3090004 / 0-50-3090004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-3099995 / 0031-50-3099995 (050-3099995 / 0-50-3099995) +31-50-3099996 / 0031-50-3099996 (050-3099996 / 0-50-3099996) +31-50-3099997 / 0031-50-3099997 (050-3099997 / 0-50-3099997) +31-50-3099998 / 0031-50-3099998 (050-3099998 / 0-50-3099998) +31-50-3099999 / 0031-50-3099999 (050-3099999 / 0-50-3099999)