Identifiers

domain at the highest level of the DNS hierarchy

ISO standard unique string identifier for a digital object

A uniform resource locator (URL), colloquially known as a web address, is a reference to a resource on the World Wide Web. A URL specifies the location of a resource on a computer network and a mechanism for retrieving it. A URL is a specific type of Uniform Resource Identifier (URI), although many people use the two terms interchangeably. A URL is most commonly used to reference a web page (HTTP/HTTPS) but is also used for file transfer (FTP), email (mailto), database access (JDBC), and many other applications.

metal or plastic identification plate attached to a motor vehicle or trailer

identification string that defines a realm of administrative autonomy, authority or control within the Internet

OCLC dataset and service that virtually combines multiple name authority files into a single name authority service

numbering system for catalog records at the Library of Congress (not a subject classification)

The bibcode (also known as the refcode) is a compact identifier used by several astronomical data systems to uniquely specify literature references.

numbering scheme for dialing telephones

thumb|right|A storey plan (the red floor would be the 5th in North American convention, or 4th in the European convention)

The ORCID (; Open Researcher and Contributor ID) is a nonproprietary persistent identifier, in the form of an alphanumeric code, to uniquely identify authors and contributors of scholarly communication.

unique sequence of digits assigned to a telephone subscription

number assigned to a composition to indicate its chronological order in the composer's production

alphanumerical designation used to identify spacecraft in or beyond Earth orbit launched since 1962

symbol to identify a language, dialect or a group of languages

standard describing a barcode symbology and numbering

thumb|alt=A German license plate with the value "TZ 66H" is mounted on the rear of a car|Vehicle registration plate|Registration plates are used to display identifiers for motor vehicles.

10-character alphanumeric unique identifier

identifier for chemical substances

NORAD satellite identifier

technology specification for assigning, managing, and resolving persistent identifiers for digital objects and other resources on the Internet

thumb|A black-headed gull ringed with an alphanumeric plastic ring that makes it easier to read from a distance. Alphanumeric characters or alphanumerics are characters belonging to the English alphabet or Arabic numerals. It includes both lower and uppercase characters. The complete list of alphanumeric characters in lexicographically ascending order is: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.

KulturNav is a Norwegian cloud-based software service, allowing users to create, manage and distribute name authorities and terminology, focusing on the needs of museums and other cultural heritage institutions. The software is developed by KulturIT ANS and the development project is funded by the Arts Council Norway.

Uniform Resource Identifier (URI) that uses the urn scheme

In computer networking, a hostname (archaically nodename) is a label that is assigned to a device connected to a computer network and that is used to identify the device in various forms of electronic communication, such as the World Wide Web. Hostnames may be simple names consisting of a single word or phrase, or they may be structured. Each hostname usually has at least one numeric network address associated with it for routing packets for performance and other reasons.

A permalink or permanent link is a URL that is intended to remain unchanged for many years into the future, yielding a hyperlink that is less susceptible to link rot. Permalinks are often rendered simply, that is, as clean URLs, to be easier to type and remember. Most modern blogging and content-syndication software systems support such links. Sometimes URL shortening is used to create them.

ID sent in digital form over a radio frequency to uniquely identify a ship

barcode symbology used for tracking trade items in stores

identifier which is unique and permanent within all of space and time

a standard identifier code based on an international standard for uniquely identifying sound recordings and music video recordings

identifier for printed music developed by ISO

thumb | right | alt=Diagram showing Mobile Subscriber Integrated Services Digital Network (MSISDN) number | Mobile Subscriber Integrated Services Digital Network (MSISDN) number MSISDN () is a number uniquely identifying a subscription in a Global System for Mobile communications or a Universal Mobile Telecommunications System mobile network. It is the mapping of the telephone number to the subscriber identity module in a mobile or cellular phone. This abbreviation has several interpretations, the most common one being "Mobile Station International Subscriber Directory Number".

identifier for a specific flight or route

unique identifier for audiovisual works and related versions, similar to ISBN for books

sign formerly added by book publishers in the margin of some pages as identifiable page collation helpers for their bookbinding

CODEN – according to ASTM standard E250 – is a six-character, alphanumeric bibliographic code that provides concise, unique and unambiguous identification of the titles of periodicals and non-serial publications from all subject areas.

standardized and organized sets of words and phrases for retrieval and disambiguation of information, distinguishing preferred terms from non-preferred terms

item worn on someone's clothes telling the wearer's name, often also occupation

ISO standard

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digital identifier to identify a certain piece of data, derived from the data by an algorithm

number to identify produce in grocery stores

ID number used for user accounts and groups in Microsoft Windows

sign that is displayed upon parking a vehicle permitting the operator of a vehicle to special privileges regarding the parking of that vehicle

universal identifier that provides a unique identity for every physical object anywhere in the world, for all time

identifier for trade items

The ' or PND' (translated as Name Authority File) is an authority file of people, which served primarily to access literature in libraries. The PND has been built up between 1995 and 1998 and was published by the German National Library (DNB) until 2012. For each person, there is a record with his or her name, birth and occupation connected with a unique identifier, the PND number.

globally unambiguous persistent name standardized by ITU and ISO/IEC

system of giving a unique number to each building in a street or area

standard

unique identifier for musical works

card identifier found on payment cards

number or alphanumeric characters assigned to a stretch of public roadway often dependent on the type of road

URI scheme

long-lasting digital name

part of the GS1 systems of standards

13-character code identifying an object used by NATO member country armed forces

alphabetic code ID used on the North American railroad network

identifier number for logistics

OCLC-designed persistent identifier scheme