Domain name

Generic domain names—problems arising from unregulated name selection


This article primarily discusses registered Internet domain names. See the Domain Name System article for technical discussions about the Domain Name System and the hostname.
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 .

Below the top-level domains in the domain name hierarchy are the second-level domain (SLD) names


Next are third-level domains, which are written immediately to the left of a second-level domain. There can be fourth- and fifth-level domains, and so on, with virtually no limitation. An example of a working domain with four domain levels is www.sos.state.oh.us. The www preceding the domains is a host name of the World-Wide Web server. Each level is separated by a dot, or period symbol. 'sos' is said to be a sub-domain of 'state.oh.us', and 'state' a sub-domain of 'oh.us', etc. In general, Sub-domains are domains subordinate to their parent domain. An example of very deep levels of subdomain ordering are the IPv6 reverse resolution DNS zones.

DOMAINS YAHOO

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YAHOO

Yahoo! is known across the world with its multi-lingual interface. The site is available in over 20 languages, including English. The official directory for all of the Yahoo! International sites is world.yahoo.com.

Each of the international sites are wholly-owned by Yahoo!, with the exception of Yahoo! Japan1, in which it holds a 33% minority stake. Historically, Yahoo! entered into joint venture agreements with Softbank for the major European sites2 (UK, France, Germany) and well as Korea and Japan. In November 2005, Yahoo! purchased the minority interests that Softbank owned in Europe and Korea.


[edit] Yahoo! logo
Yahoo! logos come in many different colors and shapes.[72] The first logo was used when the company was founded in 1995; it was red, and it had three icons on each side of it. Even though the official logo is purple,[73] the logo used on the main page yahoo.com is red with a black outline and shadow. Sometimes the logo is abbreviated with

INTRODUCTION

The prefixes and dashes between words were once considered second, but now due to brandability, if the term is a commercial term, a prefix is often preferred. Example eLoans markets with an e to indicate to its potential customers that a loan may be obtained online.

The two primary prefixes are "E", for electronic, and "I", for Internet. Both indicate the word or phrase to be accessible online. Because of that, in terms of branding, an i or e combined with a commercial term are highly desirable. In domain sales typically an e has been preferred, and i slightly less in terms of demand. eBrooklyn sold for approximately $2500 whereas once it would have been available to register at the price of a domain name (which ranges from $8 to $30 us dollars depending on the registrar). The rapidly increasing use of prefixes in conjunction with main dictionary and or commercial terms is here and for some predominantly internet based companies, or high technology, high profile companies, the prefix is now preferred.

DOMAIN NAME YAHOO

introduction

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

DEFINITION
By definition (RFC 1034), domain names are restricted to the ASCII letters a through z (case-insensitive), the digits 0 through 9, and the hyphen, with some other restrictions in terms of name length and position of hyphens. Since this does not allow the use of many characters commonly found in non-English languages, and no multi-byte characters necessary for most Asian languages, the Internationalized domain name (IDN) system has been developed and is now in testing stage with a set of top-level domains established for this purpose.

The underscore character is frequently used to ensure that a domain name is not recognized as a hostname, as with the use of SRV records, for example, although some older systems such as NetBIOS did allow it. To avoid confusion and for other reasons, domain names with underscores in them are sometimes used where hostnames are required.

Domain names are often referred to simply as domains and domain name registrants are frequently referred to as domain owners, although domain name registration with a registrar does not confer any legal ownership of the name, only an exclusive right of use.