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Telephone numbering plan of the USSR refers to a set of telephone area codes, numbers and dialing rules, which operated in the Soviet Union until the 1990s. After the Collapse of the USSR many new independent republics reconstructed their numbering plans. However, many of the principles of the Soviet numbering plan still remains. The international code +7 is retained by Russia and Kazakhstan. ==Basic principles== The Soviet Union used four-level open numbering plan. The long distance prefix was 8. # One could call a local number without the code. Local numbers usually consisted of 5-7 digits, with seven-digit numbers only occurring in Moscow (since 1968), Leningrad (since 1976) and Kiev (since 1981). # Within the same numbering area (most often within the state or region) the type was: 8 2X YYYYYY, where 2 replaced the three-digit area code. # For calls to other areas, one had to first dial long distance prefix 8, then, after the tone - the full code of the numbering area, which consisted of a three-digit code and zone additional digit(X), and then local phone number. #: For example: 8 09624 XXXXX for a call to the city of Klin, Klinsky District, Moscow Oblast. # For international calls, dial 8 10 #: For example: 8 10 1 212 XXXXXXX for a call to the city of New York. 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 the Soviet Union」の詳細全文を読む スポンサード リンク
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