What are the different types of DNS lookups?
DNS 查找有哪些不同类型？
The DNS lookups are divided into two main types. Forward DNS lookups and Reverse DNS lookups:
Forward DNS LookupsThese are the normal DNS lookups in which the IP address of a hostname is queried from the servers via the A record.
Reverse DNS Lookups: They are used to find the hostname associated with an IP address using the PTR record stored in the DNS servers.
DNS 查找分为两种主要类型。正向 DNS 查找和反向 DNS 查找：
正向 DNS 查找这些是正常的 DNS 查找，其中通过 A 记录从服务器查询主机名的 IP 地址。
反向 DNS 查找：它们用于使用存储在 DNS 服务器中的 PTR 记录查找与 IP 地址关联的主机名。