Area Code +31-50-(5850000...5859999) 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 : 5850000 Subscriber Number To : 5859999 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-(5840000...5849999) next › : +31-50-(5860000...5869999) Dialling Instructions For trunk calls: 0 50 5850000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 5850000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5850000 ~ 5859999 (Count: 10,000) Example: +31-50-5850000 / 0031-50-5850000 (050-5850000 / 0-50-5850000) +31-50-5850001 / 0031-50-5850001 (050-5850001 / 0-50-5850001) +31-50-5850002 / 0031-50-5850002 (050-5850002 / 0-50-5850002) +31-50-5850003 / 0031-50-5850003 (050-5850003 / 0-50-5850003) +31-50-5850004 / 0031-50-5850004 (050-5850004 / 0-50-5850004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-5859995 / 0031-50-5859995 (050-5859995 / 0-50-5859995) +31-50-5859996 / 0031-50-5859996 (050-5859996 / 0-50-5859996) +31-50-5859997 / 0031-50-5859997 (050-5859997 / 0-50-5859997) +31-50-5859998 / 0031-50-5859998 (050-5859998 / 0-50-5859998) +31-50-5859999 / 0031-50-5859999 (050-5859999 / 0-50-5859999)