Area Code +31-523-(850000...859999) 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 : 850000 Subscriber Number To : 859999 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 : Ziggo 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-(820000...820999) next › : +31-523-(870000...870999) Dialling Instructions For trunk calls: 0 523 850000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 523 850000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 850000 ~ 859999 (Count: 10,000) Example: +31-523-850000 / 0031-523-850000 (0523-850000 / 0-523-850000) +31-523-850001 / 0031-523-850001 (0523-850001 / 0-523-850001) +31-523-850002 / 0031-523-850002 (0523-850002 / 0-523-850002) +31-523-850003 / 0031-523-850003 (0523-850003 / 0-523-850003) +31-523-850004 / 0031-523-850004 (0523-850004 / 0-523-850004) ...+31-523-xxxxxx / 0031-523-xxxxxx (0523-xxxxxx / 0-523-xxxxxx) ...+31-523-859995 / 0031-523-859995 (0523-859995 / 0-523-859995) +31-523-859996 / 0031-523-859996 (0523-859996 / 0-523-859996) +31-523-859997 / 0031-523-859997 (0523-859997 / 0-523-859997) +31-523-859998 / 0031-523-859998 (0523-859998 / 0-523-859998) +31-523-859999 / 0031-523-859999 (0523-859999 / 0-523-859999)