Alpha-level global cities2/9/2024 ![]() ![]() Research in this vein generally conceptualises cities as nodes, and the intra-firm relations between them as ties, forming the building blocks for globally scaled interurban networks. For some countries, codes are defined for more than one level of subdivisions.One of the prevailing approaches to the study of the global economy is the analysis of global city networks based on the activities of multinational firms. The second part is a string of up to three alphanumeric characters, which is usually obtained from national sources and stems from coding systems already in use in the country concerned, but may also be developed by the ISO itself.Įach complete ISO 3166-2 code can then be used to uniquely identify a country subdivision in a global context.Īs of 29 November 2022 there are 5,043 codes defined in ISO 3166-2.The first part is the ISO 3166-1 alpha-2 code of the country.Each complete ISO 3166-2 code consists of two parts, separated by a hyphen: The purpose of ISO 3166-2 is to establish an international standard of short and unique alphanumeric codes to represent the relevant administrative divisions and dependent territories of all countries in a more convenient and less ambiguous form than their full names. The official name of the standard is Codes for the representation of names of countries and their subdivisions – Part 2: Country subdivision code. ISO 3166-2 is part of the ISO 3166 standard published by the International Organization for Standardization (ISO), and defines codes for identifying the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
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