Area Code +31-50-(5070000...5079999) 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 : 5070000 Subscriber Number To : 5079999 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-(5030000...5039999) next › : +31-50-(5200000...5209999) Dialling Instructions For trunk calls: 0 50 5070000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 5070000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5070000 ~ 5079999 (Count: 10,000) Example: +31-50-5070000 / 0031-50-5070000 (050-5070000 / 0-50-5070000) +31-50-5070001 / 0031-50-5070001 (050-5070001 / 0-50-5070001) +31-50-5070002 / 0031-50-5070002 (050-5070002 / 0-50-5070002) +31-50-5070003 / 0031-50-5070003 (050-5070003 / 0-50-5070003) +31-50-5070004 / 0031-50-5070004 (050-5070004 / 0-50-5070004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-5079995 / 0031-50-5079995 (050-5079995 / 0-50-5079995) +31-50-5079996 / 0031-50-5079996 (050-5079996 / 0-50-5079996) +31-50-5079997 / 0031-50-5079997 (050-5079997 / 0-50-5079997) +31-50-5079998 / 0031-50-5079998 (050-5079998 / 0-50-5079998) +31-50-5079999 / 0031-50-5079999 (050-5079999 / 0-50-5079999)