Internationalized Domain Names - IDN FAQs - Procedures - IDN Procedure from VeriSign, Inc.

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Internationalized Domain Names



IDN FAQs - Procedures

How will internationalized domain names be processed?

The registrar will use Punycode and valid name prep checks to convert native language characters into ASCII-compliant codes. These ASCII strings will then be sent to the VeriSign database. 
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What is the encoding used for this process?

Based on the IETF published RFC 3492 (Request for Comment), the encoding will be Punycode. 
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May hyphens be used in internationalized domain names?

Yes. Hyphens may be used in internationalized domain names. However, just as current standards do not allow names to begin or end with a hyphen, the ASCII transformation cannot begin or end with a hyphen. 
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What is the maximum number of characters allowed for an internationalized domain name?

The encoded form of the internationalized domain name (including the 4 characters for .com or .net) may contain up to 67 characters. The characters can be letters, numbers, and/or hyphens. Hyphens may not begin or end a domain name. The internationalized domain name transformation software will reject the name if the encoded conversion exceeds the limit. 
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What is the format of the domain name when it is entered into the VeriSign database?

Internationalized domain names are stored in the VeriSign database as ASCII-compliant punycode codes with .com or .net suffixes. 
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How will internationalized domain names appear in the Zone file, as the actual name in the native character set, or as the ASCII transformation?

When in the Zone file, internationalized domain names will appear as the encoded ASCII character string. For example, the punycode encoding of domain.com will be stored as xn--eckwd4c7c.com
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Will there be separate EPP codes to indicate registration failures/errors for internationalized domain names and name servers?

The registration failure/error codes for internationalized domain names and name servers are the same as those in the current EPP. Additional codes have been added to support errors specific to internationalized domain name conversion and encoding. 
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