ISO 3166-1
The international standard that lists codes for countries and territories. Its two-letter codes are the basis for country code domains: IANA Internet Assigned Numbers Authority The functions that coordinate the root zone, IP addresses and protocol numbers. Full definition of IANA does not decide what counts as a country, it follows this list. A change in the list can lead to a new ccTLD country code top-level domain A top-level domain for a country or territory, usually two letters long. Full definition of ccTLD or a retirement.
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- Governance and policy