whois compravivienda.com/author/eventday9/
Domain:
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Try for webbased whois (don't expect it to work yet)
compravivienda.com/author/eventday9/
checking....compravivienda.com/author/eventday9/
$
whois
compravivienda.com/author/eventday9/
No whois server is known for this kind of object.