dns - xn-- on domain, what it means?

Question

I want to know what the xn-- (domain) -66b.com means in a domain. For example, I bought dise?olatinoamericano.com with ?.

And in mozilla it appears http://xn--diseolatinoamericano-66b.com/ also in Facebook I can't link anything.

Thanks!

question from:https://stackoverflow.com/questions/9724379/xn-on-domain-what-it-means

Answer 1

Its the result of IDNA encoding; i.e. converting your unicode domain name to its ASCII equivalent which has to be done as DNS is not unicode-aware.

The xn-- says "everything that follows is encoded-unicode".