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Posted by John Bokma on March 24, 2005, 6:58 am
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Is there a module that can split a given host in a subdomain, domain, tld
part?
e.g.
www.google.com => www google com
www.google.co.uk => www google.co uk
www.google.nl => www google nl
www.asus.com.tw => www asus.com tw
(yup, technically the com? is probably the domain, and www a sub-sub
domain)
--
John Small Perl scripts: http://johnbokma.com/perl/
Perl programmer available: http://castleamber.com/
Happy Customers: http://castleamber.com/testimonials.html
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Posted by Brian McCauley on March 24, 2005, 9:15 am
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John Bokma wrote:
> Is there a module that can split a given host in a subdomain, domain, tld
> part?
>
> e.g.
>
> www.google.com => www google com
> www.google.co.uk => www google.co uk
> www.google.nl => www google nl
> www.asus.com.tw => www asus.com tw
>
> (yup, technically the com? is probably the domain, and www a sub-sub
> domain)
DNS is strictly hierachical. As far as DNS is concerned 'uk', 'co.uk',
'google.co.uk' and 'www.google.co.uk' are all just domains.
You need to take a step back and consider what you really want to do. I
suspect you have no idea.
To split a dot-delimited string into a list of components:
my @components = split /./, $domain_name;
Do you perhaps want to find the DNS zone boundries? If so why do you
think this would be helpful?
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Posted by John Bokma on March 24, 2005, 5:53 pm
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Brian McCauley wrote:
> John Bokma wrote:
>
>> Is there a module that can split a given host in a subdomain, domain,
>> tld part?
>>
>> e.g.
>>
>> www.google.com => www google com
>> www.google.co.uk => www google.co uk
>> www.google.nl => www google nl
>> www.asus.com.tw => www asus.com tw
>>
>> (yup, technically the com? is probably the domain, and www a sub-sub
>> domain)
>
> DNS is strictly hierachical. As far as DNS is concerned 'uk',
> 'co.uk', 'google.co.uk' and 'www.google.co.uk' are all just domains.
Yeah I know.
> You need to take a step back and consider what you really want to do.
> I suspect you have no idea.
Because you don't have an idea doesn't mean I haven't one.
I want to get the part one can register as, say, a company.
in the uk I can't register
somename.uk
but I can register:
somename.co.uk
In nl however, I can register:
somename.nl
--
John Small Perl scripts: http://johnbokma.com/perl/
Perl programmer available: http://castleamber.com/
Happy Customers: http://castleamber.com/testimonials.html
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Posted by Brian McCauley on March 25, 2005, 9:40 am
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John Bokma wrote:
> Brian McCauley wrote:
>
>
>>John Bokma wrote:
>>
>>
>>>Is there a module that can split a given host in a subdomain, domain,
>>>tld part?
>>>
>>>e.g.
>>>
>>>www.google.com => www google com
>>>www.google.co.uk => www google.co uk
>>>www.google.nl => www google nl
>>>www.asus.com.tw => www asus.com tw
>>>
>>>(yup, technically the com? is probably the domain, and www a sub-sub
>>>domain)
>>
>>DNS is strictly hierachical. As far as DNS is concerned 'uk',
>>'co.uk', 'google.co.uk' and 'www.google.co.uk' are all just domains.
>
>
> Yeah I know.
>
>
>>You need to take a step back and consider what you really want to do.
>>I suspect you have no idea.
>
> Because you don't have an idea doesn't mean I haven't one.
No, but the fact that your OP does not convey your idea is often a good
sign that you haven't actually crystalised your idea.
> I want to get the part one can register as, say, a company.
This is a question about the policy of issuing subdomains under a
domain. There may or may not be a standard way for a domain to publish
its subdomain policy. There certainly is no widely used standard.
If there were a widely used standard then there could be a Perl module
to interface to it.
> in the uk I can't register
>
> somename.uk
You can't, but some entities can. Sufficiently few uk 2nd-LDs are
issued I suspect each application is considered on it's merits rather
than there being a simple algotithm.
There are also domains like ac.uk which accept registrations from a
restricted class of entities.
Someone could compose a list of domains that accept subdomain
registration from the general populace but this could simply be a plain
text file rather than a Perl module.
Note: there are situations like uk.com where both uk.com and com accept
registrations.
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