Code converter
Dialing a number…
When making an international phone call…
1. International Direct Dialing Prefix (IDD Prefix): 00
The IDD prefix is the international prefix needed to dial a call FROM the country listed TO another country. This is followed by the country code for the country you are calling (see below). The IDD situation in many countries has changed from time to time and some countries have multiple IDDs, with each one used by a different long-distance carrier.
2. Country code
The country code is the national prefix to be used when dialing TO that particular country FROM another country. In some cases you will also need to dial a city or area code.
3. The phone number itself
Lists of IDDs and country codes can be found at www.idd.com.au
4. The National Direct Dialing prefix (NDD prefix)
The NDD prefix is the access code used to make a call WITHIN that country from one city to another. The NDD is followed by the city/area code for the place you are calling.
Phone numbers are often written in this format: +32-(0)2-XXX-XX-XX. This expresses the numbers used for both international and national long-distance calls. In the example, +32 indicates the country code, while (0) indicates the NDD. When dialing from outside the country, the NDD would not be used after dialing the country code; when dialing from within that country, the NDD would be used, but the country code would not.
In Belgium the NDD prefix is 0.
Area codes
See International Numbering Plans
