DNS 查询类型

原創 张同学 ^_^ 2020-06-23 07:32

DNS的查询类型有20种，比较常用的查询类型有有A,NS,CNAME,PTR，MX等五种类型。
以下分别介绍五种类型：

类型 解释
A 由DNS域名到IP地址的查询，即正向查询，
PTR 由IP到域名的查询，即逆向查询
NS 查询解析的名字服务器（Name server）
CNAME 查询DNS的别名
MX 邮箱服务器查询
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