It is possible to register the letters a to z, the numbers 0 to 9 and hyphen “-“. In addition, the following characters are allowed: é, ë, ê, è, â, à, æ, ô, œ, ù, û, ü, ç, î, ï, ÿ.

However, it is not possible to register domains that begin or end with a hyphen “-“ or have it located in the third and fourth positions.