Area Code +31-10-(8400000...8409999) located in Rotterdam, Zuid-Holland (ZH), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 10 Subscriber Number From : 8400000 Subscriber Number To : 8409999 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 : UPC Nederland 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 : ZH Region Name : Zuid-Holland City : Rotterdam Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 51.9200 Longitude : 4.4700 ‹ previous : +31-10-(8330000...8339999) next › : +31-10-(8410000...8419999) Dialling Instructions For trunk calls: 0 10 8400000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 10 8400000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8400000 ~ 8409999 (Count: 10,000) Example: +31-10-8400000 / 0031-10-8400000 (010-8400000 / 0-10-8400000) +31-10-8400001 / 0031-10-8400001 (010-8400001 / 0-10-8400001) +31-10-8400002 / 0031-10-8400002 (010-8400002 / 0-10-8400002) +31-10-8400003 / 0031-10-8400003 (010-8400003 / 0-10-8400003) +31-10-8400004 / 0031-10-8400004 (010-8400004 / 0-10-8400004) ...+31-10-xxxxxxx / 0031-10-xxxxxxx (010-xxxxxxx / 0-10-xxxxxxx) ...+31-10-8409995 / 0031-10-8409995 (010-8409995 / 0-10-8409995) +31-10-8409996 / 0031-10-8409996 (010-8409996 / 0-10-8409996) +31-10-8409997 / 0031-10-8409997 (010-8409997 / 0-10-8409997) +31-10-8409998 / 0031-10-8409998 (010-8409998 / 0-10-8409998) +31-10-8409999 / 0031-10-8409999 (010-8409999 / 0-10-8409999)