[dns-operations] check if a domain has been registered via DNS

Peng Yonghua pyh at vodafonemail.de
Fri Apr 28 01:32:34 UTC 2017

在 2017/4/28 上午1:33, Doug Barton 写道:
> What would work for your situation is to test for the presence of NS
> records at the registry level, and if they are absent to fall back to
> whois to confirm.

good idea. thanks.

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