Language:enStatus: Standard
Term: uniform resource locator
Synonym1: URL (abbreviation)
Definition: standardized character string used for locating and accessing an Internet resource

NOTE 1 The general form of an URL (see RFC 1738) is as follows:


In some cases, certain parts may be omitted.

<scheme> is the access protocol, e.g. http, ftp, or news.

<user>, <password> and <port> are optional, and the separators “:” (colon) and “@” are omitted when unnecessary.

<host> is an IP address or a fully qualified host name, and is omitted for local Internet resources.

<port> is an address for protocols on the TCP layer and has a default which depends on the protocol.

<url-path> indicates the access to a resource inside the host. If it is omitted, a default resource is accessed.

Examples of URLs identifying a Web site, a file, or a service:

“” is the URL of the site of the International Electrotechnical Commission. In this URL, “ch” is the top-level domain name. It should be noted that besides <scheme> this URL contains only the part <host>.

“” is the URL of a page giving in English the IEC mission and objectives. This file is accessible by the HTTP protocol.

“news:comp.os.unix” is the URL of a forum whose name is “comp.os.unix” and “” might be the URL of an article, the identifier of which is “XYZ123”, stored on the host “”.

NOTE 2 URL is an acronym of the full term "uniform resource locator".

Publication date:2010-06
Internal notes:2012-12-18: Image replaced by text. JGO
CO remarks:
TC/SC remarks:
VT remarks: