The other type of code is Netherlands National Direct Dialing prefix (or NDD). It is used only when dialing to a destination within the Netherlands. Netherlands NDD code is only used as long distance dialing within the Netherlands. Do not use Netherlands National Direct Dialing prefix when dialing from outside Netherlands into Netherlands.
For Netherlands long distance, you have to dial Netherlands National Direct Dialing prefix (or NDD), City/ Area Code, and then the subscriber telephone number respectively as:
+31 (Netherlands National Direct Dialing prefix code) + City Area Code + Number you wish to call.
On the other hand, International Dialing Netherlands Code or Netherlands International Direct Dialing prefix (or IDD) is used when dialing from the Netherlands to outside Netherlands. Do not use Netherlands IDD code when dialing within Netherlands for long distance.
On the other hand, when dialing to Netherlands from outside Netherlands, a Netherlands Country Code is used . Netherlands Country Code however is not used when dialing within Netherlands.
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