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I needed to collect certain information from domain certificate, i was looking into "whois" but it gives a "TLD has no whois server" in certain cases.

Also does the information provided in the certificate differ for different domains?

And is there a limit in using whois from a ip? If yes what is it in term of concurrency and the number of times it can be queried ?

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1 Answer 1

A few questions.

  • What "certain information" are you trying to retrieve?

  • By "certificate" do you mean an SSL certificate? Or do you just want the domain registration information? This isn't clear in your question.

  • Do you have examples of the domains/TLDs that aren't working?

Yes, some domain registrars limit the total number of WHOIS looksup per-IP. The limit is down to them. You'd need to give examples to find out more.

Just a stab in the dark here - you're not trying to domain-snipe are you?

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The certain details would include the registraion date, its expiry, the domain registrar name, the status of the website etc. I just want the domain registration details and not the ssl certificate. Try whois for any .bt domain to get the "TLD has no whois server" error. I am not trying to do a domain snipe. –  Kelvin K Jul 7 '11 at 5:15
    
The full error I get is "This TLD has no whois server, but you can access the whois database at nic.bt/";. In this case they've provided their own interface to the whois database (probably so they can control the information more). One solution would be to script something which POSTs a query to their website and parses the result. But in short, unless they provided a public WHOIS server, the standard WHOIS tool won't work. –  Coops Jul 7 '11 at 9:12

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