August 6, 2010

Dynamic DNS

Classless Inter-Domain Routing
Dynamic DNS - Dynamic DNS is a method, protocol, or network service that provides the capability for a networked device, such as a router or computer system using the Internet Protocol Suite, to notify a domain name server to change, in real time (ad-hoc) the active DNS configuration of its configured hostnames, addresses or other information stored in DNS.

A popular application of dynamic DNS is to provide a residential user's Internet gateway that has a variable, often changing, IP address with a well known hostname resolvable by network applications through standard DNS queries.

Dynamic DNS providers provide a software client program that automates the discovery and registration of client's public IP addresses. The client program is executed on a computer or device in the private network. It connects to the service provider's systems and causes those systems to link the discovered public IP address of the home network with a hostname in the domain name system. Depending on the provider, the hostname is registered within a domain owned by the provider or the customer's own domain name. These services can function by a number of mechanisms. Often they use an HTTP service request since even restrictive environments usually allow HTTP service. This group of services is commonly also referred to by the term Dynamic DNS, although it is not the standards-based DNS Update method. However, the latter might be involved in the providers systems.

Most home networking routers today have this feature already built into their firmware. One of the early routers to support Dynamic DNS was the UMAX UGate-3000 in 1999, which supported the TZO.COM dynamic DNS service.
List of Dynamic DNS Providers

  • - Allowing free third-level domains under a provided array of second level names, as well as user-provided second-level domains.

  • - URL cloaking and dynamic DNS.

  • - Australian based DDNS provider. Commercial services and free entry level accounts. Remote update clients for many platforms, including Unices and Windows.

  • - Compatible with R3, R4 and R5 clients, and a listing of service providers from around the world.

  • DHS International - Low-Cost dynamic DNS provider allowing static hostnames to be mapped to dynamic IP addresses.

  • DNS Park, LLC. - Web-based domain name management services with forwarding, and redirection.

  • - Service provides domain name servers for the DSL, cable or dialup modem user.

  • DNS2Go - Service provides a dynamic IP address the ability to run any kind of server from any Internet connection on any platform, including Windows and Linux.

  • dns.widge - Web based creation and management of DNS services.

  • Domain DNS - Free DNS and forwarding service provided by

  • DtDNS - Offers DNS hosting and related services to home users and hosting firms. Free Dynamic hostnames, custom nameserver branding, e-mail forwarding and spooling services.

  • - The Dynamic IP addressing system with client application, and DNS provider.

  • DynDNS Info - DynDNS FAQ and information.

  • - Provides DNS hosting services, free dynamic DNS, domain registration, mail services, network monitoring, and web redirection.

  • - Free Dynamic IP Hosting with support for Danish, English, German and French languages. Also features IP redirection, Site down messages, URL redirection, and MX records.

  • DynIP - Provides DDNS, allowing you to put the server for your domain name on a dial-up connection.

  • DyNS - Dynamic and static DNS service, domain registrations. Free and premium services.

  • - Dynamic DNS service, provides privacy policy, statistics, and servers listing.

  • Eastwind - Web and email redirection services

  • - Provide static DNS services as well as many advanced services such as Dynamic DNS resolution, secondary service, AXFR service, and domain2web redirection.

  • GnuDIP Dynamic DNS - Server software for giving Dynamic IP addresses, static domain names.

  • - Offers dynamic subdomains, email and web page forwarding.

  • - Free domain parking, dynamic DNS, and DNS management

  • - Offers DNS services, such as Dynamic DNS and Web Redirect.

  • DNS Service - Free Dynamic DNS, sub domains and managed DNS services. Web based update utility. No banner adds or nag-ware, totally free sub-domain service.

  • Nicolas' Internet Services - Offers dynamic DNS, hosting, web mail, and URL forwarding.

  • Nikhilino Online - Dynamic DNS (DYNDNS) service for .com .org .net domains. Client runs on all major operating systems.

  • No-IP - Provider of Dynamic DNS network services and URL redirection. Three packages available.

  • Open Domain Server - Dynamic DNS provider offering multiple free public domains and support for user-supplied domains.

  • PlanetDNS - Run your own web site, mail server, ftp server by associating a domain name of your choice to your currently assigned dynamic IP address. Works with cable, DSL, ISDN or dial-up connections.

  • SolidDNS - Provides Dynamic DNS services and domain registration.

  • StaticCling - Static hostnames for your dynamic IP. Native clients are available for almost any operating system.

  • - Dynamic DNS service allowing or

  • DynDNS - Bulletin Board Service (BBS) oriented Dynamic DNS provider.

  • Tzolkin Corporation - Features include offline webpage, signon and signoff IP address control, and new change domain and change email functions.

  • Virtual DNS - The Virtual DNS service provides an alias for dynamic IP addresses to a static hostname.

  • - Gives free domain names for dynamic IP's, for dialup connections on all major operating systems.

  • ZA NiC - Free domains. Service policy, mailing list, and FAQ.

  • ZoneEdit - Simple and free web-based domain manager which allows you to safely administrate DNS, mail and web forwarding.
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