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The Brazilian telephone numbering plan uses a two-digit area code plus eight-digit local phone numbers (nine digits for mobile lines in some area codes from a few states). Public utility services use three-digit phone numbers, always starting with ''1''.〔(【引用サイトリンク】title=Anatel - Telefones de Utilidade Pública )〕 == Local dialing == As established by ANATEL, the Brazilian federal telecommunications regulatory agency, the format for a local phone number is ''nnnn-nnnn'', where the first digit identifies the service associated with the phone number: *''2'' to ''5'': fixed phones *''6'' to ''9'': mobile phones Until 2008, the initial digit ''6'' was used for landlines in some parts of São Paulo and neighbouring cities in area code ''11'', but Anatel demanded that ''6'' was to be released for mobile use. Fixed-line numbers starting with ''6'' in that area were gradually changed during 2008 to new prefixes starting with ''2''. In other areas of Brazil, the initial digit ''6'' was not in use at that time, so no change was necessary.〔(【引用サイトリンク】title=Embratel - Mudança de prefixo )〕 Until 2005, some localities still used a seven-digit local number (''nnn-nnnn''). Until the 1990s, there were also certain regions with three-digit area codes and five- (''n-nnnn'') or six-digit (''nn-nnnn'') phone numbers. Even shorter numbers used to exist in previous decades, especially in small towns and before direct distance dialing became universal. Numbers starting with ''400n'' are reserved for a special case of non-geographic numbers (see below). Numbers starting with ''1700'' are used within the service area of the Oi Fixo landline operator for some Internet Service Providers (ISPs) to provide dial-up Internet access to certain Oi customers. Such customers have special pricing agreements with Oi and are charged less than the price of regular local calls when calling such dial-up access numbers. Local directory assistance can be obtained by dialing ''102'', but the service is charged as a regular local call in most instances except from payphones. However, all local landline telephone companies offer on-line directory inquiries on their Web sites. Mobile lines are not available for inquiry, for privacy and security reasons. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Telephone numbers in Brazil」の詳細全文を読む スポンサード リンク
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