A domain name is the text name corresponding to the numeric IP address of a computer on the Internet. A domain name must be unique. Internet users access your website using your domain name.

The unique name that identifies an Internet site. Domain names are translated by the domain name system (DNS) into unique (IP addresses), the unique numerical code that identifies a particular computer or other device connected to the Internet. The structure of domain names within the .jo DNS has three levels. Each complete name must be unique and comprise all three levels, each separated by a period (.) ie name.domain.jo.

An internationalized domain name (IDN) is an Internet domain name that (potentially) contains non-ASCII characters. Such domain names could contain letters with diacritics, as required by many European languages, or characters from non-Latin scripts such as Arabic or Chinese.

Domain names are the familiar, easy-to-remember names you find on the Internet, such as yahoo.com

A domain name locates an organization or other entity on the Internet. For example, the domain name www.yahoo.com locates an Internet address for "www.yahoo.com" at Internet point 199.0.0.2 and a particular host server named "www".

(source: www.wikipedia.org)

REGISTRATION FOR OTHER SECOND LEVEL DOMAIN NAMES
The second level domain names available under .jo include:
.com — for commercial organizations. (buy now)
.org — for non-commercial organizations. (buy now)
.net —for networks and Internet Service Providers with a valid license. (buy now)
.edu — for educational institutions. (buy now)
.gov —for government organizations.
.mil -for military organizations.
.myname.jo is open to organizations who opt to register directly under .jo.
(source: www.nitc.gov.jo)