Top-Level Domains

A top-level domain (TLD), is the last part of an Internet domain name; that is, the letters which follow the final dot of any domain name. For example, in the domain name www.example.com, the top-level domain is com (or COM, as domain names are not case-sensitive). Management of top-level domains is handled by the ICANN. Top-level domains are classified into three types: country code top-level domains (ccTLD): Used by a country or a dependent territory. It is two letters long, for example .us for the United States. With some historical exceptions, the code for any territory is the same as its two-letter ISO 3166 code. generic top-level domains (gTLD): Used (at least in theory) by a particular class of organizations (for example, .com for commercial organizations). It is three or more letters long. Most gTLDs are available for use worldwide, but for historical reasons .mil (military) and .gov (governmental) are restricted to use by the respective U.S. authorities. gTLDs are subclassified into sponsored top-level domains (sTLD), e.g. .aero, .coop and .museum, and unsponsored top-level domains (uTLD), e.g. .biz, .info, and .name. infrastructure top-level domains (iTLD): The top-level domain .arpa is the only confirmed one. .root has been known to exist without reason. Read the full background at Top-Level Domains Wikipedia

Top-Level Domains / Participants

John Levine
  • John Levine
  • Author, Consultant & Speaker
  • Joined: Jun 14, 2004
    Featured Blogs: 82
    Comments Posted: 93
Susan Crawford
  • Susan Crawford
  • Professor, University of Michigan Law School
  • Joined: Nov 19, 2003
    Featured Blogs: 50
    Comments Posted: 0
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  • Gadi Evron
  • Security Architect
  • Joined: Feb 22, 2006
    Featured Blogs: 32
    Comments Posted: 35
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  • Karl Auerbach
  • Chief Technical Officer
  • United States
  • Joined: Jun 14, 2003
    Featured Blogs: 29
    Comments Posted: 82
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  • Bruce Levinson
  • Joined: Nov 17, 2003
    Featured Blogs: 27
    Comments Posted: 1
Milton Mueller
  • Milton Mueller
  • Professor, Syracuse University School of Information Studies
  • United States
  • Joined: Sep 09, 2004
    Featured Blogs: 24
    Comments Posted: 44
Patrick Vande Walle
  • Patrick Vande Walle
  • CTO (Chief Travelling Officer) for .sport
  • Luxembourg
  • Joined: Jan 17, 2006
    Featured Blogs: 21
    Comments Posted: 17
Geoff Huston
  • Geoff Huston
  • Chief Scientist & Author
  • Joined: Sep 06, 2003
    Featured Blogs: 20
    Comments Posted: 2
Michael Geist
  • Michael Geist
  • Chair of Internet and E-commerce Law
  • Joined: Jan 09, 2004
    Featured Blogs: 20
    Comments Posted: 0
James Seng
  • James Seng
  • Assistant Director
  • Joined: Oct 22, 2003
    Featured Blogs: 18
    Comments Posted: 45
Alex Tajirian
  • Alex Tajirian
  • CEO
  • United States
  • Joined: Dec 08, 2004
    Featured Blogs: 18
    Comments Posted: 39
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  • George Kirikos
  • President, Leap of Faith Financial Services Inc.
  • Canada
  • Joined: Sep 16, 2003
    Featured Blogs: 18
    Comments Posted: 75