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Re: extracting the root domain from a URL [message #171654 is a reply to message #171642]

Fri, 14 January 2011 10:27

Jonathan Stein
Messages: 43
Registered: September 2010

Karma:

Member

Den 13-01-2011 22:50, Mike skrev:

> Given any valid URL, I'd like to extract the root domain like this:
>
> http://www.site.com = site.com
> http://xxx.yyy.site.com = site.com
> http://subdomain.site.com = site.com
> http://www.site.com.tw = site.com.tw
> http://xxx.yyy.site.com.asia = site.com.asia
> http://subdomain.site.com.af = site.com.af

If you need a fast lookup, you'll probably need to maintain a database
with rules for each TLD you intend to support.

Otherwise you could go for a series of "whois" lookups. If whois
succeeds for "site.com.af" but fails for "subdomain.site.com.af", then
"site.com.af" was probably what you was looking for.

- Maybe a combination with a database or hard coded rules for the most
used TLDs.

Regards

Jonathan

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[Message index]

		extracting the root domain from a URL By: Mike on Thu, 13 January 2011 21:50
		Re: extracting the root domain from a URL By: Captain Paralytic on Thu, 13 January 2011 22:29
		Re: extracting the root domain from a URL By: Mike on Thu, 13 January 2011 23:26
		Re: extracting the root domain from a URL By: Denis McMahon on Fri, 14 January 2011 02:43
		Re: extracting the root domain from a URL By: Luuk on Fri, 14 January 2011 07:51
		Re: extracting the root domain from a URL By: Captain Paralytic on Fri, 14 January 2011 11:17
		Re: extracting the root domain from a URL By: Thomas 'PointedEars' on Fri, 14 January 2011 23:59
		Re: extracting the root domain from a URL By: Captain Paralytic on Sun, 16 January 2011 13:11
		Re: extracting the root domain from a URL By: Jerry Stuckle on Sun, 16 January 2011 14:21
		Re: extracting the root domain from a URL By: Thomas 'PointedEars' on Sun, 16 January 2011 17:04
		Re: extracting the root domain from a URL By: Thomas 'PointedEars' on Fri, 14 January 2011 23:41
		Re: extracting the root domain from a URL By: alvaro.NOSPAMTHANX on Fri, 14 January 2011 08:43
		Re: extracting the root domain from a URL By: Jonathan Stein on Fri, 14 January 2011 10:27
		Re: extracting the root domain from a URL By: Thomas 'PointedEars' on Fri, 14 January 2011 23:54
		Re: extracting the root domain from a URL By: Jonathan Stein on Sun, 16 January 2011 09:29
		Re: extracting the root domain from a URL By: Thomas 'PointedEars' on Sun, 16 January 2011 16:57
		Re: extracting the root domain from a URL By: Jonathan Stein on Sun, 16 January 2011 22:45

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