A name that is nearly right

Easy · 15 points

One of the domains below is not what it appears to be. It uses a character that renders like a Latin letter but is not one — the technique behind most convincing phishing links.

Find it, and submit its punycode form as the flag: skrd{xn--...}.

Your browser will show you the answer if you ask it the right way. Encoding a hostname to IDNA is one line in any language.

Artefact

bank.example
mail.example
bаnk.example
shop.example
portal.example

Hint

Copy each line into a tool that converts a hostname to IDNA. Four of them come back unchanged.