ICANNtop level domain中文Deregulation of top-level domain names since 2005Third-level domainCountry domain頂級域- 維基百科，自由的百科全書 - Wikipedia
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頂級域（或頂級域名；英語：Top-level Domain；英文縮寫：TLD）是網際網路DNS等級之中的最高級的域，它保存於DNS根域的名字空間中。
頂級域名是域名的最後一個部份，即 ...
頂級域
維基百科，自由的百科全書
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頂級域、一級域或頂級域名（英語：Top-levelDomain,TLD）是網際網路域名系統的等級中，位於根域空間的最高級域名，例如com是網址example.com的頂級域。
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