In historical terms, a DID is a feature offered by telephone companies in order to serve the needs of their customers via PBX (Private Branch Exchange) systems. In practical terms, a DID number (also called a DDI in Europe and sometimes referred to as a virtual number) is a local telephone number in a selected country or city. These numbers are then forwarded by DID World Wide to PSTN (Plain Old Telephone System – a regular telephone), Voice over IP (VoIP), SIP, H.323, IAX, or GTalk anywhere in the world.
Typically a DID is used to provide local telephone numbers for customers on a worldwide basis, or to provide access from regular telephones to non-PSTN destinations such as VoIP.
The countries currently supported are shown below. Please visit this page regularly to check for coverage updates.
- Algeria
- Argentina
- Australia
- Austria
- Bahrain
- Belgium
- Brazil
- Bulgaria
- Canada
- Chile
- China
- Colombia
- Costa Rica
- Croatia
- Cyprus
- Czech Republic
- Denmark
- Dominican Republic
- El Salvador
- Estonia
- Finland
- France
- Georgia
- Germany
- Greece
- Hungary
- Ireland
- Israel
- Italy
- Japan
- Latvia
- Lithuania
- Luxembourg
- Malaysia
- Malta
- Mexico
- Netherlands
- New Zealand
- Norway
- Panama
- Peru
- Poland
- Portugal
- Puerto Rico
- Romania
- Russian Federation
- Slovakia
- Slovenia
- South Africa
- Spain
- Sweden
- Switzerland
- Thailand
- Turkey
- Ukraine
- United Kingdom
- United States
- Venezuela
