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12. Internationalization Considerations

12.1. Character Encoding​

The default text encoding for JSON responses in RDAP is UTF-8 [RFC3629], and all servers and clients MUST support UTF-8.

12.2. URIs and IRIs​

[RFC7480] defines the use of URIs and IRIs in RDAP.

12.3. Language Tags​

Section 4.4 defines the use of language tags in the JSON responses defined in this document.

12.4. Internationalized Domain Names​

IDNs are denoted in this specification by the separation of DNS names in LDH form and Unicode form (see Section 3). Representation of IDNs in registries is described by the "variants" object in Section 5.3 and the suggested values listed in Section 10.2.5.

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