Area Code +31-50-(3210000...3219999) 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 : 3210000 Subscriber Number To : 3219999 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 : Ziggo Zakelijk Services 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-(3201000...3209999) next › : +31-50-(3600000...3609999) Dialling Instructions For trunk calls: 0 50 3210000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 3210000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3210000 ~ 3219999 (Count: 10,000) Example: +31-50-3210000 / 0031-50-3210000 (050-3210000 / 0-50-3210000) +31-50-3210001 / 0031-50-3210001 (050-3210001 / 0-50-3210001) +31-50-3210002 / 0031-50-3210002 (050-3210002 / 0-50-3210002) +31-50-3210003 / 0031-50-3210003 (050-3210003 / 0-50-3210003) +31-50-3210004 / 0031-50-3210004 (050-3210004 / 0-50-3210004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-3219995 / 0031-50-3219995 (050-3219995 / 0-50-3219995) +31-50-3219996 / 0031-50-3219996 (050-3219996 / 0-50-3219996) +31-50-3219997 / 0031-50-3219997 (050-3219997 / 0-50-3219997) +31-50-3219998 / 0031-50-3219998 (050-3219998 / 0-50-3219998) +31-50-3219999 / 0031-50-3219999 (050-3219999 / 0-50-3219999)