Area Code +31-15-(3610000...3619999) located in Delft, Zuid-Holland (ZH), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 15 Subscriber Number From : 3610000 Subscriber Number To : 3619999 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 : ZH Region Name : Zuid-Holland City : Delft Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.0100 Longitude : 4.3600 ‹ previous : +31-15-(3333000...3333999) next › : +31-15-(3620000...3629999) Dialling Instructions For trunk calls: 0 15 3610000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 15 3610000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3610000 ~ 3619999 (Count: 10,000) Example: +31-15-3610000 / 0031-15-3610000 (015-3610000 / 0-15-3610000) +31-15-3610001 / 0031-15-3610001 (015-3610001 / 0-15-3610001) +31-15-3610002 / 0031-15-3610002 (015-3610002 / 0-15-3610002) +31-15-3610003 / 0031-15-3610003 (015-3610003 / 0-15-3610003) +31-15-3610004 / 0031-15-3610004 (015-3610004 / 0-15-3610004) ...+31-15-xxxxxxx / 0031-15-xxxxxxx (015-xxxxxxx / 0-15-xxxxxxx) ...+31-15-3619995 / 0031-15-3619995 (015-3619995 / 0-15-3619995) +31-15-3619996 / 0031-15-3619996 (015-3619996 / 0-15-3619996) +31-15-3619997 / 0031-15-3619997 (015-3619997 / 0-15-3619997) +31-15-3619998 / 0031-15-3619998 (015-3619998 / 0-15-3619998) +31-15-3619999 / 0031-15-3619999 (015-3619999 / 0-15-3619999)