sTLD（赞助顶级域名）
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赞助TLD（sTLD）是一种由设定注册人资格要求的组织管理的专用[[tld|TLD]]。与开放式[[gtld|gTLD]]不同，sTLD服务于特定社群并执行符合其目的的政策。
示例
.edu is sponsored by EDUCAUSE (restricted to accredited institutions), .gov by the US GSA (US government only), and .museum by MuseDoma.