Area Code +31-597-(430000...439999) located in Winschoten, Groningen (GR), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 597 Subscriber Number From : 430000 Subscriber Number To : 439999 National Destination Code Length : 3 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 : Winschoten Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 53.1400 Longitude : 7.0400 ‹ previous : +31-597-(420000...429999) next › : +31-597-(450000...459999) Dialling Instructions For trunk calls: 0 597 430000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 597 430000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 430000 ~ 439999 (Count: 10,000) Example: +31-597-430000 / 0031-597-430000 (0597-430000 / 0-597-430000) +31-597-430001 / 0031-597-430001 (0597-430001 / 0-597-430001) +31-597-430002 / 0031-597-430002 (0597-430002 / 0-597-430002) +31-597-430003 / 0031-597-430003 (0597-430003 / 0-597-430003) +31-597-430004 / 0031-597-430004 (0597-430004 / 0-597-430004) ...+31-597-xxxxxx / 0031-597-xxxxxx (0597-xxxxxx / 0-597-xxxxxx) ...+31-597-439995 / 0031-597-439995 (0597-439995 / 0-597-439995) +31-597-439996 / 0031-597-439996 (0597-439996 / 0-597-439996) +31-597-439997 / 0031-597-439997 (0597-439997 / 0-597-439997) +31-597-439998 / 0031-597-439998 (0597-439998 / 0-597-439998) +31-597-439999 / 0031-597-439999 (0597-439999 / 0-597-439999)