Area Code +31-15-(5150000...5159999) 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 : 5150000 Subscriber Number To : 5159999 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 : BT NEDERLAND N.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-(4550000...4550999) next › : +31-15-(7000000...7009999) Dialling Instructions For trunk calls: 0 15 5150000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 15 5150000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5150000 ~ 5159999 (Count: 10,000) Example: +31-15-5150000 / 0031-15-5150000 (015-5150000 / 0-15-5150000) +31-15-5150001 / 0031-15-5150001 (015-5150001 / 0-15-5150001) +31-15-5150002 / 0031-15-5150002 (015-5150002 / 0-15-5150002) +31-15-5150003 / 0031-15-5150003 (015-5150003 / 0-15-5150003) +31-15-5150004 / 0031-15-5150004 (015-5150004 / 0-15-5150004) ...+31-15-xxxxxxx / 0031-15-xxxxxxx (015-xxxxxxx / 0-15-xxxxxxx) ...+31-15-5159995 / 0031-15-5159995 (015-5159995 / 0-15-5159995) +31-15-5159996 / 0031-15-5159996 (015-5159996 / 0-15-5159996) +31-15-5159997 / 0031-15-5159997 (015-5159997 / 0-15-5159997) +31-15-5159998 / 0031-15-5159998 (015-5159998 / 0-15-5159998) +31-15-5159999 / 0031-15-5159999 (015-5159999 / 0-15-5159999)