Area Code +31-15-(2120000...2129999) 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 : 2120000 Subscriber Number To : 2129999 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-(2050000...2059999) next › : +31-15-(2130000...2139999) Dialling Instructions For trunk calls: 0 15 2120000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 15 2120000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2120000 ~ 2129999 (Count: 10,000) Example: +31-15-2120000 / 0031-15-2120000 (015-2120000 / 0-15-2120000) +31-15-2120001 / 0031-15-2120001 (015-2120001 / 0-15-2120001) +31-15-2120002 / 0031-15-2120002 (015-2120002 / 0-15-2120002) +31-15-2120003 / 0031-15-2120003 (015-2120003 / 0-15-2120003) +31-15-2120004 / 0031-15-2120004 (015-2120004 / 0-15-2120004) ...+31-15-xxxxxxx / 0031-15-xxxxxxx (015-xxxxxxx / 0-15-xxxxxxx) ...+31-15-2129995 / 0031-15-2129995 (015-2129995 / 0-15-2129995) +31-15-2129996 / 0031-15-2129996 (015-2129996 / 0-15-2129996) +31-15-2129997 / 0031-15-2129997 (015-2129997 / 0-15-2129997) +31-15-2129998 / 0031-15-2129998 (015-2129998 / 0-15-2129998) +31-15-2129999 / 0031-15-2129999 (015-2129999 / 0-15-2129999)