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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.); 55 is the first two digits of a three-digit area code, but you need the next digit to narrow down the location.

Telephone country code +55, dialed as 001 55 from many places, is Brazil.

To reduce the possibility for confusion, it is best to write an international telephone number beginning with the plus symbol and the correct telephone country code (e.g., +1 or +55), 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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