I was inspecting the full list of iana top level domains and came across some uncommon ones, but also some very uncommon ones, particularly 153 top level domains starting with xn You need first to remove the ds record at parent, it will only hinder your effort to put back your dns in a working way. If on top of that, you want to check wether the domain is in the idn form, split the domain at the dots
Xn Stock Illustrations – 296 Xn Stock Illustrations, Vectors & Clipart
If in addition to that, you want to check if the domain is idn and is valid, just attempt to decode it with the library's decode function.
To elaborate on that slightly terse answer
/e makes robocopy recursively copy subdirectories, including empty ones /xc excludes existing files with the same timestamp, but different file sizes /xn excludes existing files newer than the copy in the source directory The answers here are obsolete as of 2023
Browsers now disregard homographs when deciding how to display domain names (but fyi, registries have rules regarding registering homograph domains). You can start reading more about this here
