Converting domains with special characters (IDN's)
Since 1st January 2005, it has been possible to register IDNs (Internationalized Domain Names) with special characters from the Portuguese alphabet.
The Association DNS.PT gives its users the opportunity of surfing the Internet using the Portuguese language in its correct form, making .PT one of the foremost TLDs in global terms.
For example, canção.pt instead of cancao.pt, making direct access to Portuguese domains clearer.
Registering a domain with special characters does not imply any changes to the way the registration is carried out. It is totally transparent for the user. However, in technical terms, it is necessary to carry out a slightly different configuration: configuration of these domains must be carried out in punycode form.
Punycode is the universal way of representing domains in ASCII format, whatever their original format.:-)
In order to correctly configure the canção.pt domain in the name servers, the format xn—cano-ioax.pt must be used.
For the time being, only the following special characters in the Portuguese alphabet have been considered: (`) grave accent, (´) acute accent, (^) circumflex accent and (~) tilde. These characters only make sense when applied to the Portuguese language (à; á; â; ã; ç; é; ê; í; ó; ô; õ; ú).