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Japan Country Code

For data processing and communications and Japan and it's dependent areas is represent by a Japan Country code. Japan country code is a short numeric geographical code (geocodes) developed by the ISO 3166-1 system. Japan country code is freqently refered to as Japan dialing codes or Japan E.164 calling code.

Japan Country Code is used when dialing to Japan from outside Japan. Japan Country Code is however not used when dialing within Japan.

To call Japan from outside Japan, you have to dial the your own country's International Direct Dialing prefix (IDD), Japan Country Code, City/ Area Code, and then the subscriber telephone number as:

Your Countries International Direct Dialing Prefix (IDD) +81 (Japan Country Code) + City Area Code + Number you wish to call.

When dialing from a mobile phone outside Japan into Japan, Dial '+' +81 (Japan Country Code) + City Area Code + Number you wish to call. (The "+" can be reached by holding down the "0" key until it turns into a "+". The "+" is universal prefix for all international mobile telephone calls including Japan)

Japan International Direct Dialing prefix (or IDD) is used when dialing from the Japan to outside the country (Refer to international dialing Japan code or Japan international access code). Do not use Japan IDD when dialing within Japan.

Japan National Direct Dialing prefix (or NDD) is used when dialing to a destination within the Japan (Refer to dialing Japan code). Do not use Japan National Direct Dialing prefix when dialing from outside Japan into Japan. Japan NDD is only used as long distance dialing within the country.

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