dnsPromises.reverse(ip)

• ip <string>

执行反向 DNS 查询，将 IPv4 或 IPv6 地址解析为主机名数组。

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

在发生错误时，Promise 会被 Error 对象拒绝，其中 err.code 是 DNS 错误代码 之一。

【On error, the Promise is rejected with an Error object, where err.code is one of the DNS error codes.】