International Telephone Numbers

Guide to using International VoIP Telephone Numbers

International phone numbers are provisioned for both inbound calling and/or to present as an outbound Caller ID. This is a flexible solution for customers looking to have a presence abroad or to reduce the rate for international callers.

Each country has various regulations and some countries are more flexible that others when it comes to telephone numbering.

Costa RicaCroatiaCyprusCzech RepublicDenmarkDominican Republic
El SalvadorEstoniaFinlandFranceGeorgiaGermany
GreeceHong KongHungaryIcelandIrelandIsrael
MalaysiaMaltaMexicoNetherlandsNew ZealandNorway
PanamaPeruPolandPortugalPuerto RicoRomania
Russian FederationSerbiaSingaporeSlovakiaSloveniaSouth Africa
South KoreaSpainSwedenSwitzerlandThailandTurkey
UkraineUnited KingdomUnited StatesVenezuela  


  1. T38 Fax Transmission is not supported in every county.
  2. Inbound channels are fixed and country specific.
  3. Proof of residence may be required (SEE BELOW)

International VoIP Number Restrictions
CountryNumber TypeProof of Address Type 
 GermanyTOLL FREEWorldwide
 Hong KongNATIONALWorldwide
 South AfricaGEOGRAPHICLocal
 South AfricaNATIONALWorldwide
 South KoreaGEOGRAPHICLocal
 TurkeyTOLL FREEWorldwide



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