yes, ü requires punycode encoding. The xn-- prefix indicates that.
And because there are way too many ways to confuse people with similar looking characters, the domains can be typed in and converted appropriately, but some webbrowsers ensure that you notice if something is off with www.bаnkofamerica. com (www.xn--bnkofamerica-x9j. com)
And because there are way too many ways to confuse people with similar looking characters, the domains can be typed in and converted appropriately, but some webbrowsers ensure that you notice if something is off with www.bаnkofamerica. com (www.xn--bnkofamerica-x9j. com)