International Dialling & Country Calling Code
Search country calling codes, exit prefixes, trunk codes, and international dialling instructions for 195+ countries worldwide.
Japan
JP / JPNCountry Calling Codes Directory (1 matches)
| Country | Calling Code | ISO | Exit (IDD) | Emergency | Action |
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About this tool
How to use it
- Type a country name, ISO two-letter code (e.g., DE, FR, JP), or calling prefix into the search bar.
- Select the country you are calling from (e.g. United States exit 011 vs UK/Europe exit 00).
- View the exact button sequence required to complete the call, including international exit prefixes, country code, and national trunk prefix removal instructions.
- Click Copy on any country card to grab its dialling code or review local emergency service contact numbers.
Why it matters
International telephone numbering plans vary substantially across continents. Placing calls abroad requires dialing an exit code (IDD), the recipient's country code, and often dropping the initial domestic trunk zero (such as dialing +44 20 instead of 020 in London). Getting prefixes wrong results in failed call connections or expensive operator assistance charges.
When to use it
Use this directory when saving overseas contacts to your mobile phone, configuring VoIP trunks (Twilio/Zoom), placing hotel reservations abroad, or memorizing local 911/112 emergency equivalents before departing on vacation.
Good to know
On smartphones, you do not need to dial exit codes like 011 or 00. Simply long-press the '0' key on the dial pad until the '+' symbol appears; mobile carrier towers automatically replace '+' with the local international exit prefix.
Common questions
What is an international exit code (IDD)?
An International Direct Dialling (IDD) exit code is the prefix dialed on landlines to signal an outgoing international call. In the USA and Canada, the exit code is 011; in Europe and the UK, it is 00; in Australia, it is 0011.
Why do I need to drop the leading '0' when calling internationally?
The leading zero in numbers like London's '020' or Paris's '01' is a domestic trunk code used solely for domestic routing within that nation. When calling from abroad with '+44' or '+33', the domestic trunk zero must be omitted.
What is the universal European emergency phone number?
112 is the European Union's universal emergency number, valid across all EU countries, Switzerland, and the UK, routing automatically to police, ambulance, or fire services free of charge.
How do I save international phone numbers on my smartphone?
Always store foreign contacts in full E.164 format starting with the '+' sign followed by the country code and phone number (e.g. +44 7911 123456). Storing numbers with '+' ensures they connect properly whether you are home or roaming abroad.