Domain
The most basic functionality of a domain name is to provide symbolic representations, i.e., recognizable names, to mostly numerically addressed Internet resources. This abstraction allows any resource (e.g., website) to be moved to a different physical location in the address topology of the network, globally or locally in an intranet, in effect changing the IP address. This translation from domain names to IP addresses (and vice versa) is accomplished with the global facilities of Domain Name System (DNS).
By allowing the use of unique alphabetical addresses instead of numeric ones, domain names allow Internet users to more easily find and communicate with web sites and any other IP-based communications services. The flexibility of the domain name system allows multiple IP addresses to be assigned to a single domain name, or multiple domain names to be services from a single IP address. This means that one server may have multiple roles (such as hosting multiple independent websites), or that one role can be spread among many servers. One IP address can also be assigned to several servers, as used in networking.
The following example illustrates the difference between aURL (Uniform Resource Locator) and a domain name:
- URL: http://www.example.net/index.html
- Domain name: www.example.net
- Registered domain name: example.net
You could put out those hanging nets with bird feed in them to hang in trees. They seem to go down very well. You can get them in all hardware stores.
@jason kenny:
thx for comment