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An international dialing code — also called a country calling code — is the numeric prefix you dial before a local number to route calls internationally. Defined by the ITU E.164 standard, each country has a unique code, such as +1 for the US/Canada or +44 for the UK.

From a mobile, press + (usually hold 0) followed by the country code and local number. From a landline, dial your country's IDD exit code first (011 from the US/Canada, 00 from Europe), then the country code, area code, and subscriber number.

A country code routes your call to the correct nation — it comes first in any international sequence. An area code is a sub-national prefix routing to a specific city or region within that country. Some small nations use no area codes and route directly from the country code.

An exit code — also called an IDD prefix — tells your local network that the call is leaving the country. You dial it before the country code. It is 011 in the US and Canada, 00 across most of Europe, Asia and Africa, and 0011 in Australia. On any mobile phone you can replace it with a + symbol, which works worldwide.

Many countries use a leading 0 (a national trunk prefix) for domestic calls — for example London numbers start 020. That trunk prefix is only for calls made inside the country. When dialing internationally you replace it with the country code, so 020 becomes +44 20. Keeping the 0 will cause the call to fail.

Yes. All 196 countries in this directory are covered by Ajoxi's Tier-1 VoIP network. Calls are routed using E.164 format over direct carrier interconnects — CLI delivery, HD voice, and 99.99% uptime are guaranteed on every route.

Almost always. VoIP routes calls over the internet to a carrier interconnect close to the destination, avoiding legacy international toll charges. With Ajoxi you pay per-second rates with no setup fees, and the same Tier-1 quality you would get from a national operator — typically a fraction of the cost of mobile or landline international dialing.