There are many different numbering schemes for assigning numbers to entities. These generally require an agreed set of rules, or a central coordinator.
Numbering schemes include:
The E.164 numbering plan for telephone numbers, including:
... J.P., Human Rights and the United Nations: A Great Adventure (New York: Transnational Publishers, 1984)
Beaudoin G.-A. & E. Ratushny, The Canadian Charter of Rights and ...