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.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • biometrics

    Biometrics is the measurement and statistical analysis of people's unique physical and behavioral characteristics.

  • principle of least privilege (POLP)

    The principle of least privilege (POLP), an important concept in computer security, is the practice of limiting access rights for...

  • identity management (ID management)

    Identity management (ID management) is the organizational process for identifying, authenticating and authorizing individuals or ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

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

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close