检查全球的dns条目。简而言之，如果将服务器从一个IP移动到另一个IP，可以检查世界上大多数DNS服务器是否更新了它们的结果。
dnslookup的Python项目详细描述
dnslookup
dnslookup是一个简单的命令行界面，用于检查全球分辨率的状态。它依赖于系统安装的nslookup来发出请求。
安装：
pip install dnslookup
用法：
dnslookup facebook.com Result for facebook.com Country DNS IP Result BD 203.112.202.195 173.252.110.27 BE 195.35.110.4 173.252.110.27 BG 213.169.55.10 173.252.110.27 BM 206.53.177.3 173.252.110.27 BO 200.58.161.25 173.252.110.27 JP 221.186.252.130 173.252.110.27 JM 200.9.115.2 173.252.110.27
positional arguments:
domain The domain that you would like to use.
optional arguments:
-h, --help show this help message and exit
--level LEVEL, -l LEVEL
This option allows you to: (1) use a large database of
DNS Servers from public-dns.info (2) Use just the
google DNS Servers. (3) Use your own server list.
<Requires properly formatted file>
--file FILE, -f FILE If provided, it will output to the file instead of
console. File must be a csv
--url URL URL to use with option (3) of level
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