That&#x27;s actually the complete form of a FQDN (full qualified domain name):
<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Fully_qualified_domain_name#Syntax" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Fully_qualified_domain_name#Sy...</a>