: Theoretically, any one component of a domain
name can be up to 256 characters long. Officially, many registries
including the .com, .net and .org registries limit domain names to
63 characters. To be practical, however, domain names
should be much
shorter than this if users are ever
to want to type them... or even discuss them in email. Many registrars
will not sell domain names anywhere near that long.
For more information, see
how do I register a domain name?
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