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Telephone country codes never begin with zero.

Telephone country code +1, dialed as 00 1 from many places, is North America (USA, Canada, etc.). You need the next three digits to narrow down the location any farther.

Telephone country code +7, dialed as 001 7 from many places, is Russia and Kazakhstan, and 4 is the first digit of a three-digit area code somewhere in Russia. For example, +7 495 is central Moscow.

To reduce the possibility of confusion, it is best to quote an international telephone number beginning with the single plus symbol and the correct telephone country code, omitting any dialing prefix.

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)

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11y ago

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