Browse Definitions :
Definition

recursive DNS query

Contributor(s): Matthew Haughn

A recursive DNS query is a request from a client for a website that must be responded to with either the sought response -- the IP address associated with the corresponding site name or uniform resource locator (URL)  -- or an error message stating that the site does not exist.

Recursive DNS queries are standard requests by users or by domain name system (DNS) servers that are configured to pass along unresolved IP requests to another DNS server; in that way, the first server can stay available. Recursive DNS queries and recursive DNS servers are used to distribute some of the huge workload involved in resolving the names of websites into URLs.

Recursive DNS requests are filled either from the server’s own zone file cache or by consulting other servers in the hierarchy of authoritative DNS servers. The client request does not get passed on, however. It is the recursive DNS server that stays in contact until it provides the IP address or finds the request cannot be resolved and returns an error message stating that the site does not exist.

It should be noted that all DNS servers must support iterative requests. Even the requests made by recursive servers to other DNS servers are iterative. At the level of root DNS, all servers are iterative as they are the end of the line and a crucial point that needs to be available for the internet to function.

This was last updated in November 2016

Continue Reading About recursive DNS query

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

Extensions de fichiers et formats de fichiers

Motorisé par:

SearchCompliance

  • compliance framework

    A compliance framework is a structured set of guidelines that details an organization's processes for maintaining accordance with...

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • privacy compliance

    Privacy compliance is a company's accordance with established personal information protection guidelines, specifications or ...

SearchSecurity

SearchHealthIT

  • telemedicine (telehealth)

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

  • Project Nightingale

    Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

  • medical practice management (MPM) software

    Medical practice management (MPM) software is a collection of computerized services used by healthcare professionals and ...

SearchDisasterRecovery

  • crisis management plan (CMP)

    A crisis management plan (CMP) outlines how to respond to a critical situation that would negatively affect an organization's ...

  • disaster recovery (DR) test

    A disaster recovery test (DR test) is the examination of each step in a disaster recovery plan as outlined in an organization's ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

SearchStorage

  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science ...

  • megabytes per second (MBps)

    Megabytes per second (MBps) is a unit of measurement for data transfer speed to and from a computer storage device.

  • zettabyte

    A zettabyte is a unit of measurement used by technology professionals and the general public to describe a computer or other ...

Close