Raised when trying to parse a domain which is formally defined by a rule, but the rules set a requirement which is not satisfied by the input you are trying to parse.
@example
PublicSuffix.parse("nic.do") # => PublicSuffix::DomainNotAllowed PublicSuffix.parse("www.nic.do") # => PublicSuffix::Domain
@since 0.6.0
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