dns.reverse(ip, callback)

• ip <string>
• callback <Function>
  • err <Error>
  • hostnames <string[]>

执行反向域名系统查询，将 IPv4 或 IPv6 地址解析为主机名数组。

当出错时，err 是 Error 对象，其中 err.code 是 DNS 错误码之一。

• ip <string>
• callback <Function>
  • err <Error>
  • hostnames <string[]>

Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an array of host names.

On error, err is an Error object, where err.code is one of the DNS error codes.