Area Code +31-20-(7037000...7037999) 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 : 7037000 Subscriber Number To : 7037999 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 : OPTA 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-(7036000...7036999) next › : +31-20-(7038000...7038999) Dialling Instructions For trunk calls: 0 20 7037000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 20 7037000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7037000 ~ 7037999 (Count: 1,000) Example: +31-20-7037000 / 0031-20-7037000 (020-7037000 / 0-20-7037000) +31-20-7037001 / 0031-20-7037001 (020-7037001 / 0-20-7037001) +31-20-7037002 / 0031-20-7037002 (020-7037002 / 0-20-7037002) +31-20-7037003 / 0031-20-7037003 (020-7037003 / 0-20-7037003) +31-20-7037004 / 0031-20-7037004 (020-7037004 / 0-20-7037004) ...+31-20-xxxxxxx / 0031-20-xxxxxxx (020-xxxxxxx / 0-20-xxxxxxx) ...+31-20-7037995 / 0031-20-7037995 (020-7037995 / 0-20-7037995) +31-20-7037996 / 0031-20-7037996 (020-7037996 / 0-20-7037996) +31-20-7037997 / 0031-20-7037997 (020-7037997 / 0-20-7037997) +31-20-7037998 / 0031-20-7037998 (020-7037998 / 0-20-7037998) +31-20-7037999 / 0031-20-7037999 (020-7037999 / 0-20-7037999)