DNS

(fluid mechanics) direct numerical simulation (computer science) domain name system

DNS

(1)Domain Name System.

DNS

(2)Distributed Name Service. See DECdns.

DNS

(Domain Name System) The Internet's system for converting alphabetic names into numeric IP addresses. For example, when a Web address (URL) is typed into a browser, DNS servers return the IP address of the Web server associated with that name. In this made-up example, the DNS converts the URL www.company.com into the IP address 204.0.8.51. Without DNS, you would have to type the series of four numbers and dots into your browser to retrieve the website, which you actually can do. See IP address.

A Hierarchy of Servers
The DNS system is a hierarchy of duplicated database servers worldwide that begin with the "root servers" for the top-level domains (.com, .net, .org, etc.). The root servers point to the "authoritative" servers located in ISPs, as well as in large companies, that turn the names into IP addresses; the process known as "name resolution." Using our www.company.com example, COMPANY.COM is the domain name, and WWW is the hostname. The domain name is the organization's identity on the Web, and the hostname is the name of the Web server within that domain (see WWW). See DNS records, zone file, reverse DNS, recursive DNS, DDNS, HOSTS file, mDNS, ping, root server and WINS.

Getting a Web Page

Converting the domain name (URL) in a Web browser into an IP address takes numerous queries. Along the way, there can be more name servers than are shown here.

Caching Speeds Up Delivery

If the ABC.COM Web address was previously requested by one of the ISP's customers, its IP address is cached (stored) in the DNS server and returns the IP address immediately. A user's computer also typically caches IP addresses, which can eliminate the DNS query all together if the address is already in the cache.

DNS

Acronym	Definition
DNS➣Domain Name System
DNS➣Domain Name Service
DNS➣Did Not Start (auto racing)
DNS➣Direct Numerical Simulation
DNS➣Dainippon Screen (Japan)
DNS➣Den Nationale Scene (Norwegian: The National Scence)
DNS➣Did Not Show
DNS➣Desoxyribonukleinsäure (German: DNA)
DNS➣Do Not Sell
DNS➣Direction Nationale de la Statistique (French: National Directorate of Statistics; Guinea)
DNS➣Distributed Name Service
DNS➣Data Networking System
DNS➣Digital Network Systems
DNS➣Distinguished Names
DNS➣Domain Name Server
DNS➣Data Network Services
DNS➣Det Norske Studentersamfund (Norwegian: Norwegian Students' Society)
DNS➣Degree Network System (Servicemembers Opportunities College)
DNS➣Determination of Non Significance
DNS➣Double Neutron Stars (astronomy)
DNS➣Digital Network Solutions (various locations)
DNS➣Delaware Nature Society
DNS➣Director of Nursing Services
DNS➣Division of Nuclear Safety
DNS➣Debt-for-Nature Swap
DNS➣Data Network Services (Richmond, Virginia)
DNS➣Dubai National School (Dubai, United Arab Emirates)
DNS➣Digital Nervous System
DNS➣Dansyl
DNS➣Data Not Shown
DNS➣Domain Name Server/Service
DNS➣Digital Natural Sound (recording studio; Germany)
DNS➣Do Not Stuff (electronics manufacturing)
DNS➣Deviated Nasal Septum
DNS➣Distant Network Service
DNS➣Defense Nuclear Security (National Nuclear Security Administration)
DNS➣Dynamic Name Server
DNS➣Do Not Survey
DNS➣Do Not Schedule
DNS➣Dark Northern Spring (wheat)
DNS➣Debt Negotiation Services (Boynton Beach, FL)
DNS➣Do Not Substitute (pharmacy directive)
DNS➣Daily Nutritional Support (health supplement)
DNS➣Director, Navy Staff
DNS➣Defense National Stockpile
DNS➣Devoir Non Surveillé (French: Need Not Supervise)
DNS➣Department of Nuclear Safety (FEMA)
DNS➣Decca Navigator System (RadioNavigation-Commission of Irish Lights)
DNS➣Doppler Navigation System
DNS➣Den Norske Studentersangforening
DNS➣Dog N Suds (drive-in restaurant)
DNS➣Day & Night Sight
DNS➣Date Not Specified
DNS➣Diffuse Neutron Scattering
DNS➣Day/Night Scope
DNS➣Drowning Non-Swimmer (lifeguarding)
DNS➣Delta Network Systems
DNS➣Diablo Numismatic Society
DNS➣Dragon Naturally Speaking (voice recognition)
DNS➣Dremel Net Solutions LLC
DNS➣Doppler Navigation Sensor
DNS➣Dextrose Normal Saline
DNS➣Drunk 'n Stupid (band)
DNS➣Division of Nutritional Services
DNS➣Digital Network Switch
DNS➣Dinitrosalycilate (biochemistry)
DNS➣Dundee Naturalists' Society (Scotland, UK)
DNS➣Domain Naming System
DNS➣Dinitrosalicylic Acid
DNS➣Doctor of Nursing Science

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