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Will the .io domain cease to exist? | Tuta
(tuta.com)
This is a most excellent place for technology news and articles.
There's plenty of non country domains too. Just make it into some acronym or have it mean I/O or whatever.
There are sure, but none are two letters because those are restricted to country codes. Specifically the ISO 3166-1 alpha 2
IIRC two letter domains are reserved for country specific domains, the non-country domains start with three letters.