Area Code +31-523-(680000...689999) located in Hardenberg, Overijssel (OV), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 523 Subscriber Number From : 680000 Subscriber Number To : 689999 National Destination Code Length : 3 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 : OV Region Name : Overijssel City : Hardenberg Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.5800 Longitude : 6.6200 ‹ previous : +31-523-(670000...679999) next › : +31-523-(700000...700999) Dialling Instructions For trunk calls: 0 523 680000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 523 680000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 680000 ~ 689999 (Count: 10,000) Example: +31-523-680000 / 0031-523-680000 (0523-680000 / 0-523-680000) +31-523-680001 / 0031-523-680001 (0523-680001 / 0-523-680001) +31-523-680002 / 0031-523-680002 (0523-680002 / 0-523-680002) +31-523-680003 / 0031-523-680003 (0523-680003 / 0-523-680003) +31-523-680004 / 0031-523-680004 (0523-680004 / 0-523-680004) ...+31-523-xxxxxx / 0031-523-xxxxxx (0523-xxxxxx / 0-523-xxxxxx) ...+31-523-689995 / 0031-523-689995 (0523-689995 / 0-523-689995) +31-523-689996 / 0031-523-689996 (0523-689996 / 0-523-689996) +31-523-689997 / 0031-523-689997 (0523-689997 / 0-523-689997) +31-523-689998 / 0031-523-689998 (0523-689998 / 0-523-689998) +31-523-689999 / 0031-523-689999 (0523-689999 / 0-523-689999)