duolingo.com.   !dns !rdap !whois !bl !bl-slow !g !gsec
Not printing . Name Servers
com.	NS a.gtld-servers.net.
com.	NS b.gtld-servers.net.
com.	NS c.gtld-servers.net.
com.	NS d.gtld-servers.net.
com.	NS e.gtld-servers.net.
com.	NS f.gtld-servers.net.
com.	NS g.gtld-servers.net.
com.	NS h.gtld-servers.net.
com.	NS i.gtld-servers.net.
com.	NS j.gtld-servers.net.
com.	NS k.gtld-servers.net.
com.	NS l.gtld-servers.net.
com.	NS m.gtld-servers.net.
duolingo.com.	NS ns-247.awsdns-30.com.
duolingo.com.	NS ns-1020.awsdns-63.net.
duolingo.com.	NS ns-1117.awsdns-11.org.
duolingo.com.	NS ns-1904.awsdns-46.co.uk.
duolingo.com.	A 3.230.178.75   !ip !rdap !whois !bl !ptr24 !scan !tr !dnstr !g !gsec

  
___________   ____________________
           \ |
            \|

        ___________
        )    .    (
      /| __./ \.__ |\
     ||| \__| |__/ |||
      \|    / \    |/
       \_ _/\ /\_ _/
         \ _____ /
          \\___//
      _  / \___/ \  _
      \\/IPDUHUDPI\//