* 構文

[1] 
[[ISO 3166]] の2文字英字[[国符号]]がそのまま採用されていることがほとんどですが、
一部例外もあります。


* 非標準の ccTLD

[SEE[ [[TLD]] ]]

* 関連


[SEE[ [[文字コードの判定]] ]]

* メモ

[2] [CITE@en[Discussion Paper on Retiring Country Code Top-Level Domains - ICANN]]
([TIME[2017-03-20 15:10:01 +09:00]])
<https://www.icann.org/news/announcement-2-2006-12-05-en>

[3] [CITE@ja[デベロッパー ガイド  |  Google Maps Directions API  |  Google Developers]]
([TIME[2017-08-18 09:12:07 +09:00]])
<https://developers.google.com/maps/documentation/directions/intro?hl=ja#RegionBiasing>

[FIG(quote)[
[FIGCAPTION[
[4] [CITE@en[Official Blogger Blog: It’s spring cleaning time for Blogger]]
([TIME[2019-02-21 13:05:37 +09:00]])
<https://blogger.googleblog.com/2018/05/its-spring-cleaning-time-for-blogger.html>
]FIGCAPTION]

> Historically, these services have been labeled and accessed via country code top level domain names (ccTLD), such as blogspot.com.au for Australia. We’re updating the way we label country services on Blogger - now the choice of country service will no longer be indicated by domain. Instead, blogspot.com will serve you the country service that corresponds to your location, and all existing blogspot ccTLD domains will redirect to blogspot.com. 

]FIG]