How To Check If A Domain Name Is Registered

Question 1

"Registered" doesn't mean "assigned an IP accost". To know whether a domain name is registered, you'll need to do a whois query.

For Python, there's pywhois, just from its web site it seems somewhat young. Also see this SO question.

For PHP, there'south... surprise... phpwhois.

Question 2

Mike Nott has created a simple PHP course that allows you to query the who.is data for any domain you wish.

Once you phone call

                              $whois = getwhois($sld, $tld);

yous so only need to cheque the contents of $whois to determine whether the domain is currently registered.

ConroyPConroyP 39.9k 16 gold badges 77 silver badges 86 bronze badges · Answer · 2009-11-08 19:47:48Z

Mike Nott has created a simple PHP course that allows you to query the who.is data for any domain you wish.

Once you phone call

                              $whois = getwhois($sld, $tld);

yous so only need to cheque the contents of $whois to determine whether the domain is currently registered.

Question 3

apply the net_whois package from pear. for multiple results, which may occur when server names are also reported forth with domain names do something like to:

              require_once ¨Cyberspace/Whois.php¨; $whois = new Net_Whois; $whois->authorative = true; $data = $whois->query(¨example.com¨);

kguestkguest 3,759 3 gilt badges 29 silver badges 31 bronze badges · Answer · 2009-11-08 23:49:27Z

apply the net_whois package from pear. for multiple results, which may occur when server names are also reported forth with domain names do something like to:

              require_once ¨Cyberspace/Whois.php¨; $whois = new Net_Whois; $whois->authorative = true; $data = $whois->query(¨example.com¨);

Question 4

To check if a domain proper name is registered you need two informations:

The whois server for the respective top level domain (or second level domain)
A matching pattern for the response of that whois server

Those informations practise change oft. This Whois Server list tries to compile the needed informations for more than 500 top level domains. The listing also offers an API service to check if a domain is bachelor. The PHP client for that API would exist whois-api-php:

              $whoisApi = new whoisServerList\WhoisApi("apiKey"); echo $whoisApi->isAvailable("case.internet") ? "available" : "registered";

Answer · 2016-03-06 20:32:41Z

To check if a domain proper name is registered you need two informations:

The whois server for the respective top level domain (or second level domain)
A matching pattern for the response of that whois server

Those informations practise change oft. This Whois Server list tries to compile the needed informations for more than 500 top level domains. The listing also offers an API service to check if a domain is bachelor. The PHP client for that API would exist whois-api-php:

              $whoisApi = new whoisServerList\WhoisApi("apiKey"); echo $whoisApi->isAvailable("case.internet") ? "available" : "registered";

ThomasThomas 162k 43 gilt badges 331 silvery badges 442 statuary badges · Accepted Answer · 2009-11-08 19:48:16Z

"Registered" doesn't mean "assigned an IP accost". To know whether a domain name is registered, you'll need to do a whois query.

For Python, there's pywhois, just from its web site it seems somewhat young. Also see this SO question.

For PHP, there'south... surprise... phpwhois.

answered Nov eight, 2009 at xix:48

ThomasThomas

162k 43 gilt badges 331 silvery badges 442 statuary badges

ane

Yeah, the whole registered non meaning assigned an ip accost is why it failed as a solution for me.

Nov 8, 2009 at 20:35

How To Check If A Domain Name Is Registered

4 Answers four

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