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Understanding French numbering

What a number reveals, and above all what it no longer says, about its holder and their carrier.

The French numbering plan is overseen by ARCEP, the telecoms regulator. It's ARCEP that sets the meaning of each prefix, and it's against these rules that the sending form validates a number. These pages detail what a number lets you deduce, as well as the received ideas that no longer hold.

The key point

Since number portability came into force, a prefix no longer lets you deduce a number's carrier: any 06 or 07 can belong to any network. That's why this service never asks for the recipient's carrier: for a free send, only the number's ten digits are needed.

  1. An 06 or 07 numberTwo prefixes for one and the same type of line.
  2. The +33 codeThe same number, formatted to be dialled from abroad.
  3. Short codesFive digits, because a service number does without the rest.
  4. Premium-rate numbersThe cost isn't read in the number of digits.
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