HTML and CSS Reference
In-Depth Information
However, starting around 2001, the top-level domain space expanded quite a bit. A
sample of the top-level domains that have been added beyond the commonly known ones
is shown in Table D-2. Potentially more domains may be found at the Internet Assigned
Numbers Authority (IANA) Web site (
At the time of this edition's writing in 2009, there is a distinct possibility that arbitrary
domains could be introduced. For example, .google might be top-level domain for all Google
properties. Even without this happening, the top-level domain space is clearly a mess, and
with generic domains on the horizon, the situation seems unlikely to get much better soon.
Geographic domains are particularly common outside the United States; such a domain
name typically contains more information than the organization type, with a fully qualified
domain name (FQDN) including a country code as well. It generally is written as follows:
machine name . domain name . domain type . country code
Zone identifiers outside the U.S. use a two-character code to indicate the country
hosting the server. These include . ca for Canada, . mx for Mexico, . jp for Japan, and so on. A
few examples are shown here.
A complete list of country codes can be found at the IANA site (
Intended Type
Business entities similar to .com
Entities in the Asia Pacific region
Business entities (similar to .com)
Catalan linguistic and cultural community-related sites
Information-oriented sites
Job hosting sites
Mobile device sites
Museums and similar institutions
Individual by names
Professionals, particularly certified accountants, engineers, lawyers, and physicians
Telephone and contact information
Travel and tourism-related sites
T ABLE D-2 Some Newer Top-Level Domains
Search WWH ::

Custom Search