Yes, since the inception of IDN (International Domain Names) domains, all Parallels Plesk products include Plesk SiteBuilder now support UTF-8 domains (in all languages).
Should you have any further questions pertaining to your Plesk SiteBuilder license, please feel free to get in contact with the LicenseCube support team.
Article Number: 159
Posted: Wed, May 16, 2012
Last Updated: Fri, May 18, 2012
Posted: LicenseCube Support [support@licensecube.com]
Online URL: http://kbase.licensecube.com/additional-licenses/does-my-plesk-sitebuilder-support-international-domain-names.html