[IDNer]

Originally Posted by Rubber Duck

o PROTOCOL VALID: Those that are allowed to be used in IDNs.
Codepoints with this property value are permitted for general use
in IDNs. However, that a label consists only of codepoints that
have this property value does though not imply the label can be
used in DNS. See [IDNA2008-protocol] for algorithm for how to
make decisions on domain names. The abbreviated term PVALID is
used to refer to this value in the rest of this document.

Thanks a lot!