Area Code +31-50-(8550000...8559999) 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 : 8550000 Subscriber Number To : 8559999 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 : Globalcall 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-(8530000...8539999) next › : +31-50-(8700000...8709999) Dialling Instructions For trunk calls: 0 50 8550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 8550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8550000 ~ 8559999 (Count: 10,000) Example: +31-50-8550000 / 0031-50-8550000 (050-8550000 / 0-50-8550000) +31-50-8550001 / 0031-50-8550001 (050-8550001 / 0-50-8550001) +31-50-8550002 / 0031-50-8550002 (050-8550002 / 0-50-8550002) +31-50-8550003 / 0031-50-8550003 (050-8550003 / 0-50-8550003) +31-50-8550004 / 0031-50-8550004 (050-8550004 / 0-50-8550004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-8559995 / 0031-50-8559995 (050-8559995 / 0-50-8559995) +31-50-8559996 / 0031-50-8559996 (050-8559996 / 0-50-8559996) +31-50-8559997 / 0031-50-8559997 (050-8559997 / 0-50-8559997) +31-50-8559998 / 0031-50-8559998 (050-8559998 / 0-50-8559998) +31-50-8559999 / 0031-50-8559999 (050-8559999 / 0-50-8559999)