Domain Name Basics - Registries and Registrars

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Registries and Registrars a short introduction. Meant to be an overview and training material for newcomers. This presentation is not intended to be exhaustive.

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Domain Name Basics - Registries and Registrars

  1. 1. Domain Name Basics Registries and Registrars Tobias Sattler tobiassattler.com
  2. 2. 2 What are Registries? A Registry maintains all administrative data of the domain and generates a zone file which contains the addresses of the name servers for each domain. They are running one or more Top-Level-Domain (TLD)  Verisign (.com, .net, .name, .cc and .tv)  DENIC (.de) Some are also providing their backend technology to others  Afilias (.org, .global, .vegas, …)  CentralNic (.xyz, .site, .online, …) The largest Registries are Verisign, donuts, Afilias, Neustar and DENIC.
  3. 3. 3 How are Registries working? A Registry operates the delegation of domains under their TLD, and allows Registrars to register them for a defined period (usually a year). Registrations are conducted under various methods  Extensible Provisioning Protocol (EPP) is the de facto standard and it has to be used for gTLDs (.com, …)  Many ccTLDs (.co, .me, …) also use EPP, but there are also registration systems such as REST, email, fax, etc. gTLDs are bound to ICANN policies and need to provide an equal access to its registrars, whereas ccTLDs may choose their own. Hence there are a lot of differences in registration and notice periods, legal regulations, technical backend, etc.
  4. 4. 4 Registry Process based on gTLDs Source: https://whois.icann.org/en/domain-name-registration-process - Effective 03/2016
  5. 5. 5 What are the largest TLDs? Source: Numbers rounded - Source: http://www.domain-recht.de - Effective 03/2016 Domains under Management .com 124,900,000 .tk 26,300,000 .cn 16,800,000 .de 16,100,000 .net 15,600,000 .org 10,900,000 .uk 9,200,000
  6. 6. 6 What are Registrars? A Registrar is an organization or commercial entity that manages the reservation of domains. They must be accredited by Registries to sell and maintain them. Registrars working directly with gTLD Registries need to be ICANN accredited to guarantee a defined level of stability and security. While ccTLDs may have different obligation to become an accredited Registrar. These rules are usually done by the Registries themselves. Registrars can have Resellers. A reseller doesn’t need to be accredited, but is also bound to Registry rules and regulations. The largest Registrars are GoDaddy, Tucows and United Internet.
  7. 7. 7 How Registrars are working? There are more than 1,200 ICANN accredited and an unknown quantity of non-ICANN accredited Registrars. Those are mostly accredited for their homeland ccTLD. Registrars can act as Resellers as well. This is the preferred choice if they don’t want to get accredited themselves to streamline costs and lower operational efforts but still want to offer TLDs. Registrars pursue different business models and target audiences:  Reseller Market (Channel Business) – such as InterNetX and OpenSRS  End Customer Market (Individuals & Organizations) – such as GoDaddy and 1&1 Internet  Brand Protection Market (Protecting IP-Rights) – such as MarkMonitor
  8. 8. Thank you!

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