Area Code +31-23-(7100000...7100999) located in Haarlem, Noord-Holland (NH), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 23 Subscriber Number From : 7100000 Subscriber Number To : 7100999 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 : Budget Phone Company 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 : Haarlem Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.3800 Longitude : 4.6400 ‹ previous : +31-23-(7070000...7079999) next › : +31-23-(7110000...7110999) Dialling Instructions For trunk calls: 0 23 7100000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 23 7100000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7100000 ~ 7100999 (Count: 1,000) Example: +31-23-7100000 / 0031-23-7100000 (023-7100000 / 0-23-7100000) +31-23-7100001 / 0031-23-7100001 (023-7100001 / 0-23-7100001) +31-23-7100002 / 0031-23-7100002 (023-7100002 / 0-23-7100002) +31-23-7100003 / 0031-23-7100003 (023-7100003 / 0-23-7100003) +31-23-7100004 / 0031-23-7100004 (023-7100004 / 0-23-7100004) ...+31-23-xxxxxxx / 0031-23-xxxxxxx (023-xxxxxxx / 0-23-xxxxxxx) ...+31-23-7100995 / 0031-23-7100995 (023-7100995 / 0-23-7100995) +31-23-7100996 / 0031-23-7100996 (023-7100996 / 0-23-7100996) +31-23-7100997 / 0031-23-7100997 (023-7100997 / 0-23-7100997) +31-23-7100998 / 0031-23-7100998 (023-7100998 / 0-23-7100998) +31-23-7100999 / 0031-23-7100999 (023-7100999 / 0-23-7100999)