Skip to main content
Resources

Information for Domain Name Registrants

This page is available in:

News and Updates

A domain name registrant is a person or entity that holds the rights to a domain name. As a domain name registrant, you have certain rights and responsibilities. Your rights include access to information from your registrar regarding processes for registering, managing, transferring, renewing, and restoring your domain name registration. Your responsibilities include providing accurate contact information for publication in the WHOIS directory, promptly notifying your registrar of any changes to your contact information, and promptly responding to your registrar's request for information relating to your domain name registration.

If you have suggestions, or would like to submit an inquiry please contact ICANN's Global Support Center.

Contractual compliance complaints can be submitted here.

Participate/Get Involved

FAQs

Registrant Program Sessions at ICANN Meetings

A note about tracking cookies:

This site uses cookies to deliver an efficient user experience and to help us see how the site is used. If you would like to read more about the use of cookies, click here

This notice is intended to appear only the first time you visit the site on any computer.OK

Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as""icann.org"" is not an IDN."