- nslookup
使用DNS 查询工具 - set server 8.8.8.8
设置 使用google的 Public DNS 服务器 - set type=txt
查询 TXT 字段 - google.com
查询 google.com - _spf.google.com
查询 网段信息 - _netblocks.google.com
2017/05/13
如何发现Google的所有 IP地址 / howto discover all the IP addresses of Google
Google 其实自己告诉你了, 只不过你需要掌握正确的方法来获取。
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