I have been trying to register a one-character or two-letter .IN domain, but can't. Why?
All one-character and two-character domains, are reserved by government, and are not available to the public.
What characters can I use in my domain name?
Domain names can only use letters, numbers, and hyphens ("-"). Spaces and other symbols are not allowed. They cannot begin or end with a hyphen. Domain names are not case sensitive. Domains cannot exceed 63 characters.