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Registration - X500 Addresses

Directory structure

ISO/IEC Standard 9594, parts 1 to 8, specify a model of a global directory system and the services it provides. CCITT Recommendations X.500 to X.521 are equivalent to the ISO standards. Although one of the primary purposes for establishing a global directory service is to store addresses to support messaging services such as X.400 MHS, the directory can be used to store information about any object and can be used by many other applications.

Any organization can register at the national level for an organization name; however, it is recommended that only organizations that are national in scope, for example organizations that have a national charter or that operate in more than one province or territory, apply for a national registration. Such an organization is more likely to have a name that is nationally unambiguous and that can withstand the challenge process.

Note that an organization name registered is guaranteed to be unique only with respect to the Directory Information Tree (DIT). For example, an organization wishing to register an organization name at the national level, in one of the provinces, and in a municipality must register at each level.

Organization name values must satisfy the following constraints:

a. the name must be no more than 64 characters in length as specified in ISO Standard 9594-6; and

b. in accordance with ISO Standard 8824, the characters that may be used are limited to:

Capital letters A to Z
Small letters a to z
Digits 0 to 9
Space (space)
Apostrophe '
Left parenthesis (
Right parentheses )
Plus sign +
Comma ,
Hyphen -
Full stop .
Solidus /
Colon :
Equal Sign =
Question mark ?


c. spaces are allowed in the alphanumeric name, however, multiple adjacent spaces will be treated as a single space, and leading and trailing spaces will be ignored.

d. the alphanumeric name must be unique for the type of object being registered.

e. for comparison purposes in testing for uniqueness, the lower case characters and characters with diacriticals will be treated as the equivalent, unaccented, upper case character. punctuation marks and apostrophes will be ignored.

f. an applicant can request a distinct alphanumeric name for each type of information object being registered. Alternatively, the applicant can request the same alphanumeric name for more than one type of object provided that the proposed name meets the requirements of all the object types.

g. the proposed alphanumeric name must be acceptable to COSIRA/GORA. COSIRA/GORA will be the sole judge of what is acceptable and its decision will not be subject to review.

By clicking on "Register" you will be prompted to fill out TWO forms, General Information form and X500 form.