Area Code +31-50-(5590000...5599999) 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 : 5590000 Subscriber Number To : 5599999 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-(5560000...5569999) next › : +31-50-(5690000...5690999) Dialling Instructions For trunk calls: 0 50 5590000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 5590000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5590000 ~ 5599999 (Count: 10,000) Example: +31-50-5590000 / 0031-50-5590000 (050-5590000 / 0-50-5590000) +31-50-5590001 / 0031-50-5590001 (050-5590001 / 0-50-5590001) +31-50-5590002 / 0031-50-5590002 (050-5590002 / 0-50-5590002) +31-50-5590003 / 0031-50-5590003 (050-5590003 / 0-50-5590003) +31-50-5590004 / 0031-50-5590004 (050-5590004 / 0-50-5590004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-5599995 / 0031-50-5599995 (050-5599995 / 0-50-5599995) +31-50-5599996 / 0031-50-5599996 (050-5599996 / 0-50-5599996) +31-50-5599997 / 0031-50-5599997 (050-5599997 / 0-50-5599997) +31-50-5599998 / 0031-50-5599998 (050-5599998 / 0-50-5599998) +31-50-5599999 / 0031-50-5599999 (050-5599999 / 0-50-5599999)