二级域

二级域或二级域名（英語：Second-level domain, SLD）是互联网域名系统的等級中，位於頂級域之下的域名，例如example是網址example.com的二級域。[1]

參見

參考文獻

  1. ^ What are top-level domains (TLD) and country code top-level domains (ccTLD)?. GoDaddy. [2021-07-21]. （原始内容存档于2021-07-23） （英语）. 


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