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

Peng Yonghua pyh at vodafonemail.de
Thu May 4 02:49:30 UTC 2017


Yes I know this method has many limits, but I just made something based 
on this which work fine for me.

Also this site: https://instantdomainsearch.com/

doing the biz with the same way, it says in its homepage:

Domain name availability

Instant Domain Search verifies availability by doing a dns query get 
search results as fast as possible. whois lookups are much slower than 
dns queries, but provide more information about who registered the name.

thank you!

在 2017/4/28 下午6:33, Anand Buddhdev 写道:
> On 28/04/2017 12:15, Peng Yonghua wrote:
> Hello Peng,
>> If the method returns false, it may or may not indicate domain has not
>> been taken. For example, when input yahoo.uk, it returns false, but you
>> can't register yahoo.uk at all, because uk's registry keeps it but
>> doesn't delegate DNS to it.
>> So using this tool for reference only, maybe as a fast filter before whois.
>> please check:
>> http://search.cpan.org/~pyh/Net-Domain-Registration-Check-0.03/lib/Net/Domain/Registration/Check.pm
> I don't like the idea of having this as a public module in CPAN. Soon
> enough, people will be using it without really understanding its results.
> Many DNS experts here have told you that this is a bad idea. I think you
> should be listening to these experts' opinions.
> Regards,
> Anand

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