Comment by tecleandor

Se my other comment [0] but I meant for accessing the WHOIS service, not for registering. If you try any type of WHOIS request you'll be replied with a message sending you to nic.es site, where you'll be presented with a captcha if you try to get information about a registered domain.

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  0: https://news.ycombinator.com/item?id=43392356