Area Code +31-10-(6312000...6312999) 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 : 6312000 Subscriber Number To : 6312999 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 : ACM 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-(6311000...6311999) next › : +31-10-(6313000...6313999) Dialling Instructions For trunk calls: 0 10 6312000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 10 6312000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6312000 ~ 6312999 (Count: 1,000) Example: +31-10-6312000 / 0031-10-6312000 (010-6312000 / 0-10-6312000) +31-10-6312001 / 0031-10-6312001 (010-6312001 / 0-10-6312001) +31-10-6312002 / 0031-10-6312002 (010-6312002 / 0-10-6312002) +31-10-6312003 / 0031-10-6312003 (010-6312003 / 0-10-6312003) +31-10-6312004 / 0031-10-6312004 (010-6312004 / 0-10-6312004) ...+31-10-xxxxxxx / 0031-10-xxxxxxx (010-xxxxxxx / 0-10-xxxxxxx) ...+31-10-6312995 / 0031-10-6312995 (010-6312995 / 0-10-6312995) +31-10-6312996 / 0031-10-6312996 (010-6312996 / 0-10-6312996) +31-10-6312997 / 0031-10-6312997 (010-6312997 / 0-10-6312997) +31-10-6312998 / 0031-10-6312998 (010-6312998 / 0-10-6312998) +31-10-6312999 / 0031-10-6312999 (010-6312999 / 0-10-6312999)