Why is the reverse IP lookup tool not working?
为什么反向 IP 查找工具不起作用？
If the reverse DNS check does not provide any domain name, it could be because the PTR records are not configured. The error could also indicate that the IP address is not correctly entered.
如果反向 DNS 检查未提供任何域名，则可能是因为未配置 PTR 记录。错误也可能表明 IP 地址输入不正确。