Area Code +31-50-(2300000...2309999) 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 : 2300000 Subscriber Number To : 2309999 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 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-(2222000...2222999) next › : +31-50-(2400000...2400999) Dialling Instructions For trunk calls: 0 50 2300000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 50 2300000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2300000 ~ 2309999 (Count: 10,000) Example: +31-50-2300000 / 0031-50-2300000 (050-2300000 / 0-50-2300000) +31-50-2300001 / 0031-50-2300001 (050-2300001 / 0-50-2300001) +31-50-2300002 / 0031-50-2300002 (050-2300002 / 0-50-2300002) +31-50-2300003 / 0031-50-2300003 (050-2300003 / 0-50-2300003) +31-50-2300004 / 0031-50-2300004 (050-2300004 / 0-50-2300004) ...+31-50-xxxxxxx / 0031-50-xxxxxxx (050-xxxxxxx / 0-50-xxxxxxx) ...+31-50-2309995 / 0031-50-2309995 (050-2309995 / 0-50-2309995) +31-50-2309996 / 0031-50-2309996 (050-2309996 / 0-50-2309996) +31-50-2309997 / 0031-50-2309997 (050-2309997 / 0-50-2309997) +31-50-2309998 / 0031-50-2309998 (050-2309998 / 0-50-2309998) +31-50-2309999 / 0031-50-2309999 (050-2309999 / 0-50-2309999)