Area Code +31-20-(2230000...2239999) located in Amsterdam, Noord-Holland (NH), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 20 Subscriber Number From : 2230000 Subscriber Number To : 2239999 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 : UPC Nederland 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 : NH Region Name : Noord-Holland City : Amsterdam Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.3700 Longitude : 4.8900 ‹ previous : +31-20-(2220000...2229999) next › : +31-20-(2240000...2240999) Dialling Instructions For trunk calls: 0 20 2230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 20 2230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2230000 ~ 2239999 (Count: 10,000) Example: +31-20-2230000 / 0031-20-2230000 (020-2230000 / 0-20-2230000) +31-20-2230001 / 0031-20-2230001 (020-2230001 / 0-20-2230001) +31-20-2230002 / 0031-20-2230002 (020-2230002 / 0-20-2230002) +31-20-2230003 / 0031-20-2230003 (020-2230003 / 0-20-2230003) +31-20-2230004 / 0031-20-2230004 (020-2230004 / 0-20-2230004) ...+31-20-xxxxxxx / 0031-20-xxxxxxx (020-xxxxxxx / 0-20-xxxxxxx) ...+31-20-2239995 / 0031-20-2239995 (020-2239995 / 0-20-2239995) +31-20-2239996 / 0031-20-2239996 (020-2239996 / 0-20-2239996) +31-20-2239997 / 0031-20-2239997 (020-2239997 / 0-20-2239997) +31-20-2239998 / 0031-20-2239998 (020-2239998 / 0-20-2239998) +31-20-2239999 / 0031-20-2239999 (020-2239999 / 0-20-2239999)