Area Code +31-523-(620000...629999) 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 : 620000 Subscriber Number To : 629999 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-(610000...619999) next › : +31-523-(630000...639999) Dialling Instructions For trunk calls: 0 523 620000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 523 620000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 620000 ~ 629999 (Count: 10,000) Example: +31-523-620000 / 0031-523-620000 (0523-620000 / 0-523-620000) +31-523-620001 / 0031-523-620001 (0523-620001 / 0-523-620001) +31-523-620002 / 0031-523-620002 (0523-620002 / 0-523-620002) +31-523-620003 / 0031-523-620003 (0523-620003 / 0-523-620003) +31-523-620004 / 0031-523-620004 (0523-620004 / 0-523-620004) ...+31-523-xxxxxx / 0031-523-xxxxxx (0523-xxxxxx / 0-523-xxxxxx) ...+31-523-629995 / 0031-523-629995 (0523-629995 / 0-523-629995) +31-523-629996 / 0031-523-629996 (0523-629996 / 0-523-629996) +31-523-629997 / 0031-523-629997 (0523-629997 / 0-523-629997) +31-523-629998 / 0031-523-629998 (0523-629998 / 0-523-629998) +31-523-629999 / 0031-523-629999 (0523-629999 / 0-523-629999)