Area Code +31-597-(350000...359999) 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 : 350000 Subscriber Number To : 359999 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-(330000...339999) next › : +31-597-(410000...419999) Dialling Instructions For trunk calls: 0 597 350000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 597 350000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 350000 ~ 359999 (Count: 10,000) Example: +31-597-350000 / 0031-597-350000 (0597-350000 / 0-597-350000) +31-597-350001 / 0031-597-350001 (0597-350001 / 0-597-350001) +31-597-350002 / 0031-597-350002 (0597-350002 / 0-597-350002) +31-597-350003 / 0031-597-350003 (0597-350003 / 0-597-350003) +31-597-350004 / 0031-597-350004 (0597-350004 / 0-597-350004) ...+31-597-xxxxxx / 0031-597-xxxxxx (0597-xxxxxx / 0-597-xxxxxx) ...+31-597-359995 / 0031-597-359995 (0597-359995 / 0-597-359995) +31-597-359996 / 0031-597-359996 (0597-359996 / 0-597-359996) +31-597-359997 / 0031-597-359997 (0597-359997 / 0-597-359997) +31-597-359998 / 0031-597-359998 (0597-359998 / 0-597-359998) +31-597-359999 / 0031-597-359999 (0597-359999 / 0-597-359999)