This article presents a comparison of the features, platform support, and packaging of many independent implementations of
Domain Name System
The Domain Name System (DNS) is a hierarchical and distributed naming system for computers, services, and other resources in the Internet or other Internet Protocol (IP) networks. It associates various information with domain names assigned to ...
(DNS)
name server
A name server refers to the server component of the Domain Name System (DNS), one of the two principal namespaces of the Internet. The most important function of DNS servers is the translation (resolution) of human-memorable domain names (example. ...
software.
Servers compared
Each of these
DNS
The Domain Name System (DNS) is a hierarchical and distributed naming system for computers, services, and other resources in the Internet or other Internet Protocol (IP) networks. It associates various information with domain names assigned to ...
servers is an independent implementation of the DNS protocols, capable of resolving DNS names for other computers, publishing the DNS names of computers, or both. Excluded from consideration are single-feature DNS tools (such as proxies, filters, and firewalls) and redistributions of servers listed here (many products repackage BIND, for instance, with proprietary user interfaces).
DNS servers are grouped into several categories of specialization of servicing domain name system queries. The two principal roles, which may be implemented either uniquely or combined in a given product are:
* Authoritative server:
authoritative name server
A name server refers to the server component of the Domain Name System (DNS), one of the two principal namespaces of the Internet. The most important function of DNS servers is the translation (resolution) of human-memorable domain names (example. ...
s publish DNS mappings for domains under their ''authoritative'' control. Typically, a company (e.g. "Acme Example Widgets") would provide its own authority services to respond to address queries, or for other DNS information, for ''www.example.int''. These servers are listed as being at the top of the authority chain for their respective domains, and are capable of providing a definitive answer. Authoritative name servers can be ''primary name servers'', also known as ''master'' servers, i.e. they contain the original set of data, or they can be ''secondary'' or ''slave name servers'', containing data copies usually obtained from synchronization directly with the primary server, either via a DNS mechanism, or by other data store synchronization mechanisms.
* Recursive server:
recursive servers (sometimes called "DNS caches", "caching-only name servers") provide DNS name resolution for applications, by relaying the requests of the client application to the chain of authoritative name servers to fully resolve a network name. They also (typically) cache the result to answer potential future queries within a certain expiration (
time-to-live
Time to live (TTL) or hop limit is a mechanism which limits the lifespan or lifetime of data in a computer or network. TTL may be implemented as a counter or timestamp attached to or embedded in the data. Once the prescribed event count or times ...
) period. Most Internet users access a ''recursive server'' provided by their internet service provider to locate internet
hosts
A host is a person responsible for guests at an event or for providing hospitality during it.
Host may also refer to:
Places
*Host, Pennsylvania, a village in Berks County
People
*Jim Host (born 1937), American businessman
*Michel Host ( ...
such as ''
www.example.com''.
BIG-IP DNS
F5 Networks
F5, Inc. is an American technology company specializing in application security, multi-cloud management, online fraud prevention, application delivery networking (ADN), application availability & performance, network security, and access & autho ...
product offers DNS as an authoritative server, recursive and adds additional security measures. Key advantage is to use the same application delivery controller to support DNS and application acceleration.
BIND
BIND () is a suite of software for interacting with the Domain Name System (DNS). Its most prominent component, named (pronounced ''name-dee'': , short for ''name daemon''), performs both of the main DNS server roles, acting as an authoritative ...
BIND is the ''
de facto standard
A ''de facto'' standard is a custom or convention that has achieved a dominant position by public acceptance or market forces (for example, by early entrance to the market). is a Latin phrase (literally " in fact"), here meaning "in practice b ...
'' DNS server. It is a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
product and is distributed with most Unix and Linux platforms, where it is most often also referred to as ''named'' (name daemon). It is the most widely deployed DNS server.
Historically, BIND underwent three major revisions, each with significantly different architectures: BIND4, BIND8, and BIND9. BIND4 and BIND8 are now technically obsolete and not considered in this article. BIND9 is a ground-up rewrite of BIND featuring complete
DNSSEC
The Domain Name System Security Extensions (DNSSEC) are a suite of extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System (DNS) in Internet Protocol (IP) networks. The protocol ...
support in addition to other features and enhancements.
Internet Systems Consortium
Internet Systems Consortium, Inc., also known as ISC, is a Delaware-registered, 501(c)(3) non-profit corporation that supports the infrastructure of the universal, self-organizing Internet by developing and maintaining core production-quality so ...
started development of a new version, BIND 10. Its first release was in April 2010, but ISC involvement concluded with the release of BIND 10 version 1.2 in April 2014. ISC cited a lack of resources to continue development of BIND 10, and they reaffirmed their commitment to BIND9.
The BIND 10 codebase continues on as an open source project. It is not included in this comparison at this time.
Cisco Network Registrar
CNR includes a commercial DNS server from
Cisco Systems
Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational corporation, multinational digital communications technology conglomerate (company), conglomerate corporation headquartered in San Jose, California. Cisco develo ...
usually used in conjunction with the CNR DHCP (
Dynamic Host Configuration Protocol
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Internet Protocol (IP) networks for automatically assigning IP addresses and other communication parameters to devices connected to the network using a cli ...
) server. It supports high rates of dynamic update.
CoreDNS
The Cloud Native Computing Foundation (CNCF) is a Linux Foundation project that was founded in 2015 to help advance container technology and align the tech industry around its evolution.
It was announced alongside Kubernetes 1.0, an open sour ...
CoreDNS is the recommended DNS server for
Kubernetes
Kubernetes (, commonly stylized as K8s) is an open-source container orchestration system for automating software deployment, scaling, and management. Google originally designed Kubernetes, but the Cloud Native Computing Foundation now maintains ...
and graduated from the CNCF in 2019.
Dnsmasq
dnsmasq is free software providing Domain Name System (DNS) caching, a Dynamic Host Configuration Protocol (DHCP) server, router advertisement and network boot features, intended for small computer networks.
dnsmasq has low requirements for ...
Dnsmasq is a lightweight, easy to configure DNS forwarder, designed to provide DNS (and optionally
DHCP
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Internet Protocol (IP) networks for automatically assigning IP addresses and other communication parameters to devices connected to the network using a cli ...
and
TFTP
Trivial File Transfer Protocol (TFTP) is a simple lockstep File Transfer Protocol which allows a client to get a file from or put a file onto a remote host. One of its primary uses is in the early stages of nodes booting from a local area netwo ...
) services to a small-scale network. It can serve the names of local machines which are not in the global DNS.
Dnsmasq accepts DNS queries and either answers them from a small, local cache or forwards them to a real, recursive DNS server. It loads the contents of
/etc/hosts, so that local host names which do not appear in the global DNS can be resolved.
djbdns
The djbdns software package is a DNS implementation. It was created by Daniel J. Bernstein in response to his frustrations with repeated security holes in the widely used BIND DNS software. As a challenge, Bernstein offered a $1000 prize for th ...
Djbdns is a collection of DNS applications, including ''tinydns'', which was the second most used
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
DNS server in 2004.
It was designed by
Daniel J. Bernstein, author of
qmail
qmail is a mail transfer agent (MTA) that runs on Unix. It was written, starting December 1995, by Daniel J. Bernstein as a more secure replacement for the popular Sendmail program. Originally license-free software, qmail's source code was ...
, with an emphasis on security considerations. In March 2009, Bernstein paid $1000 to the first person finding a security hole in djbdns. The
source code
In computing, source code, or simply code, is any collection of code, with or without comments, written using a human-readable programming language, usually as plain text. The source code of a program is specially designed to facilitate the wo ...
is not centrally maintained and was released into the public domain in 2007. As of March 2009, there are three
forks
In cutlery or kitchenware, a fork (from la, furca 'pitchfork') is a utensil, now usually made of metal, whose long handle terminates in a head that branches into several narrow and often slightly curved tines with which one can spear foods ei ...
and more than a dozen
patches to add additional features to djbdns.
gdnsd
gdnsd is a DNS server designed for geographic balancing. gdnsd is the DNS server used by Wikipedia for its servers and networking.
Knot DNS
Knot DNS is an open-source authoritative-only server for the Domain Name System. It was created from scratch and is actively developed by CZ.NIC, the .CZ domain registry. The purpose of this project is to supply an alternative open-source impl ...
Knot DNS is a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
authoritative DNS server by
CZ.NIC. Knot DNS aims to be a fast, resilient DNS server usable for infrastructure (root and TLD) and
DNS
The Domain Name System (DNS) is a hierarchical and distributed naming system for computers, services, and other resources in the Internet or other Internet Protocol (IP) networks. It associates various information with domain names assigned to ...
hosting services. Knot DNS supports
DNSSEC
The Domain Name System Security Extensions (DNSSEC) are a suite of extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System (DNS) in Internet Protocol (IP) networks. The protocol ...
signing and among others hosts root zone (B, K, and L
root name server
A root name server is a name server for the root zone of the Domain Name System (DNS) of the Internet. It directly answers requests for records in the root zone and answers other requests by returning a list of the authoritative name servers fo ...
s), several
top-level domain
A top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the root zone of the name space. For all domains in ...
s.
Knot Resolver
Knot Resolver is an
open source
Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...
modern resolver implementation designed for scalability, resiliency, and flexibility. Its core architecture is tiny and efficient, and most of the rich features are implemented as optional modules, which limits attack surface and improves performance. Many resolver features are available out-of-the-box as modules while keeping core tiny and efficient. Modular architecture provides a state-machine like API for extensions, such as C and Lua modules.
MaraDNS
MaraDNS is an open-source (BSD licensed) Domain Name System (DNS) implementation, which acts as either a caching, recursive, or authoritative nameserver.
Features
MaraDNS has a string library, which is buffer overflow resistant and has its own r ...
MaraDNS is a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
DNS server by Sam Trenholme that claims a good security history and ease of use.
In order to change any DNS records, MaraDNS needs to be restarted. Like djbdns dnscache, the MaraDNS 2.0 stand-alone recursive resolver ("Deadwood") does not use threads.
Microsoft DNS
Microsoft DNS is the name given to the implementation of domain name system services provided in Microsoft Windows operating systems.
Overview
The Domain Name System support in Microsoft Windows NT, and thus its derivatives Windows 2000, Windo ...
Windows DNS Server component of Microsoft DNS. The same software can be configured to support authoritative, recursive and hybrid mode. The software is integrated with
Active Directory
Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services. Initially, Active Directory was used only for centralize ...
which makes it the default DNS software for many enterprise networks that are based on
Active Directory
Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services. Initially, Active Directory was used only for centralize ...
. It also allows creating zones by the standard DNS
zone file
A Domain Name System (DNS) zone file is a text file that describes a DNS zone. A DNS zone is a subset, often a single domain, of the hierarchical domain name structure of the DNS. The zone file contains mappings between domain names and IP addr ...
. The software comes packaged as a role in
Windows Server
Windows Server (formerly Windows NT Server) is a group of operating systems (OS) for servers that Microsoft has been developing since July 27, 1993. The first OS that was released for this platform was Windows NT 3.1 Advanced Server. With the r ...
. The server software is shipped with a
command line
A command-line interpreter or command-line processor uses a command-line interface (CLI) to receive commands from a user in the form of lines of text. This provides a means of setting parameters for the environment, invoking executables and pro ...
application dnscmd, a DNS management GUI wizard, and a DNS
PowerShell
PowerShell is a task automation and configuration management program from Microsoft, consisting of a command-line shell (computing), shell and the associated scripting language. Initially a Windows component only, known as Windows PowerShell, it ...
package. In Windows Server 2012, the Windows DNS added support for DNSSEC, with full-fledged online signing, with
Dynamic DNS
Dynamic DNS (DDNS) is a method of automatically updating a name server in the Domain Name System (DNS), often in real time, with the active DDNS configuration of its configured hostnames, addresses or other information.
The term is used to desc ...
and
NSEC3 support, along with RSASHA and ECDSA signing algorithms. It provides an inbuilt key storage provider and support for any third party CNG compliant key storage provider. User interface and
PowerShell
PowerShell is a task automation and configuration management program from Microsoft, consisting of a command-line shell (computing), shell and the associated scripting language. Initially a Windows component only, known as Windows PowerShell, it ...
support for managing DNS and DNSSEC were improved as well.
In the Windows Server 2016, the DNS Server supports DNS policies using which the admins can have more control over the name resolution process.
NSD
In Internet computing, NSD (for "name server daemon") is an open-source Domain Name System (DNS) server. It was developed by NLnet Labs of Amsterdam in cooperation with the RIPE NCC, from scratch as an authoritative name server (i.e., not imple ...
NSD is a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
authoritative server provided by NLNet Labs. NSD is a test-bed server for DNSSEC; new DNSSEC protocol features are often prototyped using the NSD code base. NSD hosts several
top-level domain
A top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the root zone of the name space. For all domains in ...
s, and operates three of the
root nameserver
A root name server is a name server for the root zone of the Domain Name System (DNS) of the Internet. It directly answers requests for records in the root zone and answers other requests by returning a list of the authoritative name servers f ...
s.
pdnsd
pdnsd is a caching DNS proxy server created originally by Thomas Moestl and currently maintained by Paul Rombouts.
pdnsd is configurable by a config file or using the program ''pdns-ctl'' that comes with the package. Unlike BIND, pdnsd stor ...
Pdnsd is a caching DNS proxy server that stores cached DNS records on disk for long term retention. Pdnsd is designed to be highly adaptable to situations where net connectivity is slow, unreliable, unavailable, or highly dynamic, with limited capability of acting as an authoritative nameserver. It is licensed under the
GPL
The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general u ...
.
Posadis
Posadis is a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
DNS server, written in C++, featuring
Dynamic DNS
Dynamic DNS (DDNS) is a method of automatically updating a name server in the Domain Name System (DNS), often in real time, with the active DDNS configuration of its configured hostnames, addresses or other information.
The term is used to desc ...
update support.
PowerDNS
PowerDNS is a DNS server program, written in C++ and licensed under the GPL. It runs on most Unix derivatives. PowerDNS features a large number of different ''backends'' ranging from simple BIND style zonefiles to relational databases and lo ...
PowerDNS is a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
DNS server with a variety of data storage back-ends and load balancing features. Authoritative and recursive server functions are implemented as separate applications.
Secure64 DNS
Secure64 Software Corporation is a software development company headquartered in Fort Collins, CO, USA, building server applications.
History
Secure64 was founded in 2002 and began full-scale development in 2005. Its founders include Bill Worl ...
DNS Authority is commercial authoritative name server software from
Secure64
Secure64 Software Corporation is a software development company headquartered in Fort Collins, Colorado, Fort Collins, Colorado, CO, USA, building server applications.
History
Secure64 was founded in 2002 and began full-scale development in 200 ...
, the company that built Genuinely Secure DNS applications and operating system and completely automated the deployment of DNSSEC.
DNS Cache is scalable, highly secure recursive DNS software from Secure64 which provides built-in protection against high-volume denial of service attacks, including Pseudo Random Sub Domain (PRSD) attacks.
Simple DNS Plus
Overview
Simple DNS Plus is a DNS server software product that runs on x86 and x64 editions of Windows operating system.
All options and settings are available directly from a Windows user interface.
It provides wizards for common tasks such ...
Simple DNS Plus is a commercial DNS server product that runs under Microsoft Windows with an emphasis on a simple-to-use
GUI
The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, inste ...
. Maintenance of the software appears to have slackened in recent years.
Unbound
Unbound is a validating, recursive and caching DNS server designed for high performance. It was released on May 20, 2008 (version 1.0.0) as
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...
licensed under the BSD license by NLnet Labs. It is installed as part of the base system in
FreeBSD
FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution (BSD), which was based on Research Unix. The first version of FreeBSD was released in 1993. In 2005, FreeBSD was the most popular ...
starting with version 10.0, and in
NetBSD
NetBSD is a free and open-source Unix operating system based on the Berkeley Software Distribution (BSD). It was the first open-source BSD descendant officially released after 386BSD was forked. It continues to be actively developed and is a ...
with version 8.0. A version is also available in
OpenBSD
OpenBSD is a security-focused, free and open-source, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD in 1995 by forking NetBSD 1.0. According to the website, the OpenBSD project em ...
version 5.6 and beyond. (Previous versions of FreeBSD shipped with BIND.)
YADIFA
YADIFA (an acronym for ''Yet Another DNS Implementation For All'') is a lightweight authoritative name server, written in C, with DNSSEC capabilities. It was developed by EURid.
See also
* Comparison of DNS server software
This article pre ...
YADIFA is a BSD-licensed, memory-efficient DNS server written in C. The acronym YADIFA stands for ''Yet Another DNS Implementation For All''. It was created by
EURid
EURid vzw (European Registry for Internet Domains) is the nonprofit organisation appointed by the European Commission as the domain name registry that operates the .eu top-level domain and its variants in other scripts – .ею (.eu in Cyrillic) ...
, which operates the .eu top-level domain.
Features
Some DNS features are relevant only to recursive servers, or to authoritative servers. As a result, a feature matrix such as the one in this article cannot by itself represent the effectiveness or maturity of a given implementation.
Another important qualifier is the server architecture. Some DNS servers provide support for both server roles in a single, "monolithic" program. Others are divided into smaller programs, each implementing a subsystem of the server. As in the classic Computer Science
microkernel
In computer science, a microkernel (often abbreviated as μ-kernel) is the near-minimum amount of software that can provide the mechanisms needed to implement an operating system (OS). These mechanisms include low-level address space management, ...
debate, the importance and utility of this distinction is hotly debated. The feature matrix in this article does not discuss whether DNS features are provided in a single program or several, so long as those features are provided with the base server package and not with third-party add-on software.
Explanation of features
; Authoritative
: A major category of DNS server functionality, see above.
; Recursive
: A major category of DNS server functionality, see above.
; Recursion Access Control
: Servers with this feature provide control over which hosts are permitted DNS recursive lookups. This is useful for load balancing and service protection.
; Secondary Mode (or Slave Mode)
: Authoritative servers can publish content that originates from primary data storage (such as zone files or databases connected to business administration processes)--sometimes also called 'master' servers--or can be ''secondary'' (or ''slave'') servers, republishing content fetched from and synchronized with such primary servers. Servers with a "secondary mode" feature have a built-in capability to retrieve and republish content from other servers. This is typically, though not always, provided using the
AXFR
DNS zone transfer, also sometimes known by the inducing DNS query type AXFR, is a type of DNS transaction. It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers.
A zone transfer us ...
DNS protocol.
; Caching
: Servers with this feature provide recursive services for applications, and cache the results so that future requests for the same name can be answered quickly, without a full DNS lookup. This is an important performance feature, as it significantly reduces the latency of DNS requests.
; DNSSEC
: Servers with this feature implement some variant of the
DNSSEC
The Domain Name System Security Extensions (DNSSEC) are a suite of extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System (DNS) in Internet Protocol (IP) networks. The protocol ...
protocols. They may publish names with resource record signatures (providing a "secure authority service"), and may validate those signatures during recursive lookups (providing a "secure resolver"). DNSSEC is becoming more widespread as the deployment of a DNSSEC root key has been done by
ICANN
The Internet Corporation for Assigned Names and Numbers (ICANN ) is an American multistakeholder group and nonprofit organization responsible for coordinating the maintenance and procedures of several databases related to the namespaces ...
. Deployment to individual sites is growing as top level domains start to deploy DNSSEC too. The presence of DNSSEC features is a notable characteristic of a DNS server.
; TSIG
: Servers with this feature typically provide DNSSEC services. In addition, they support the
TSIG TSIG (transaction signature) is a computer-networking protocol defined
in RFC 2845. Primarily it enables the Domain Name System (DNS) to authenticate updates to a DNS database. It is most commonly used to update Dynamic DNS or a secondary/slave D ...
(Transaction SIGnature) protocol, which allows DNS clients to establish a secure session with the server to publish
Dynamic DNS
Dynamic DNS (DDNS) is a method of automatically updating a name server in the Domain Name System (DNS), often in real time, with the active DDNS configuration of its configured hostnames, addresses or other information.
The term is used to desc ...
records or to request secure DNS lookups without incurring the cost and complexity of full DNSSEC support.
; IPv6
: Servers with this feature are capable of publishing or handling DNS records that refer to
IPv6
Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic ...
addresses. In addition to be fully IPv6 capable they must implement IPv6 transport protocol for queries and zone transfers in secondary/primary relationships and forwarder functions.
; Wildcard
: Servers with this feature can publish information for
wildcard records, which provide data about DNS names in DNS zones that are not specifically listed in the zone.
; Split horizon
: Servers with the
split-horizon DNS
In computer networking, split-horizon DNS (also known as split-view DNS, split-brain DNS, or split DNS) is the facility of a Domain Name System (DNS) implementation to provide different sets of DNS information, usually selected by the source addre ...
feature can give different answers depending on the source IP address of the query.
Feature matrix
Platforms
In this overview of
operating system
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.
Time-sharing operating systems schedule tasks for efficient use of the system and may also in ...
support for the discussed DNS server, the following terms indicate the level of support:
* ''No'' indicates that it does not exist or was never released.
* ''Partial'' indicates that while it works, the server lacks important functionality compared to versions for other OSs; it is still being developed however.
* ''Beta'' indicates that while a version is fully functional and has been released, it is still in development (e.g. for stability).
* ''Yes'' indicates that it has been officially released in a fully functional, stable version.
* ''Included'' indicates that the server comes pre-packaged with or has been integrated into the operating system.
This compilation is not exhaustive, but rather reflects the most common platforms today.
Packaging
See also
*
Comparison of DHCP server software
The following comparison of DHCP and DHCPv6 server compares general and technical information for a number of DHCP server software programs.
General
Operating system requirement
In this overview of operating system support for the discussed ...
*
DNS management software
DNS management software is computer software that controls Domain Name System (DNS) server clusters. DNS data is typically deployed on multiple physical servers. The main purposes of DNS management software are:
*to reduce human error when editin ...
*
Public recursive name server
A public recursive name server (also called public DNS resolver) is a name server service that networked computers may use to query the Domain Name System (DNS), the decentralized Internet naming system, in place of (or in addition to) name servers ...
References
External links
Don Moore's May 2004 DNS Internet survey*
ttp://www.cs.cornell.edu/People/egs/beehive/dnssurvey.html Beehive/CoDoNS DNS Survey: July 2004ITU ccTLD DNS Survey
{{DEFAULTSORT:Comparison Of Dns Server Software
DNS server software
DNS software