A Singular/Plural Notification must include all of the following information:
- The basis for the notification (singular/plural relationship to another applied-for string, an existing gTLD, a string from a prior round, or a Blocked Name).
- Reference to an authoritative dictionary entry (published on or after 1 January 1970) showing the singular/plural relationship. For widely published national or international languages, the dictionary must be from a reputable publisher or institution; for other languages, the dictionary must be recognized by the language community.
- Full bibliographic details from the dictionary: dictionary name, language, International Standard Book Number (ISBN), publisher, year and place of publication, page number on which the word can be found, and where the dictionary can be obtained or accessed (physical or online).
- Images of the dictionary's ISBN page, cover and imprint pages, and the page(s) containing the word in question.