I accidently discovered this when I mistyped www.duck.com instead of duckduckgo's www.duck.co

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Registrant: DNS Admin Google Inc. 1600 Amphitheatre Parkway Mountain View CA 94043 US Email Masking Image@google.com +1.6502530000 Fax: +1.6502530001

    Domain Name: duck.com

        Registrar Name: Markmonitor.com
        Registrar Whois: whois.markmonitor.com
        Registrar Homepage: http://www.markmonitor.com

    Administrative Contact:
        DNS Admin
        Google Inc.
        1600 Amphitheatre Parkway
         Mountain View CA 94043
        US
        Email Masking Image@google.com +1.6502530000 Fax: +1.6502530001
    Technical Contact, Zone Contact:
        DNS Admin
        Google Inc.
        1600 Amphitheatre Parkway
         Mountain View CA 94043
        US
        Email Masking Image@google.com +1.6502530000 Fax: +1.6502530001

    Created on..............: 1995-02-22.
    Expires on..............: 2015-02-23.
    Record last updated on..: 2010-11-19.

    Domain servers in listed order:

    ns3.google.com
    ns4.google.com
    ns2.google.com
    ns1.google.com