Its TLD - Top Level Domain.
In domain names, the delimiter that separates different parts (or levels) of the domain is the period (or dot). For example, in the domain "www.example.com," the periods separate the subdomain ("www"), the second-level domain ("example"), and the top-level domain ("com"). Each part of the domain represents a different level in the domain hierarchy.
.nl is the top level domain for Netherlands.
The three parts of a domain name are the host record (www, @(none) or *(other)), the SLD (second level domain) and the TLD (top level domain) or ccTLD (country code top level domain). For example wiki.answers.com:wiki = host nameanswers = SLD (second level domain).com = TLD (top level domain)
The United-States of America TLD (Top Level Domain) is .us
TLD means Top-level Domain. So...... 22 Top Level Domain??
dot cn The TLD (top level domain) for the country of China is ".cn"
I think you're referring to the top level domain. .cn is the top level domain for mainland China.
Hope this helps :) == ==
.com is an example of an top-level domain--Do you need a good .com domain name? Visit http://bit.ly/domainbr
.com
.mil