Domain Name Basics - Domains

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Domains 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 - Domains

  1. 1. Domain Name Basics Domains Tobias Sattler tobiassattler.com
  2. 2. 2 What is a domain name? It is a unique string within the domain name system (DNS). The DNS is a tree and its root is a „dot“. The point at the end of a domain name will be ignored by most programs, like browsers and email clients, but it is actually there. DNS resolves names; It is a method to translate domain names to IP addresses, to make it easier to remember. The DNS zone file contains mappings between domain names and IP addresses and other resources.
  3. 3. 3 What is a top-level domain? It is the name of the top tier and it is divided in two groups:  Generic TLDs (gTLDs) for instance .com, .net and .org  Country Code TLDs (ccTLDs) like .de, .io, .uk and many more. Actually there are more than 1,200 gTLDs, among others  .aero, .asia, .berlin, .bike, .biz, .cat, .club, .com, .coop, .edu, .gov, .guru, .info, .int, .jobs, .mil, .mobi, .museum, .name, .net, .ngo, .nyc, .org, .post, .pro, .tel, .travel, .xyz, .xxx There are over 200 ccTLDs, such as  .au, .br, .ca, .cn, .co, .de, .eu, .fr, .hk, .it, .io, .me, .nl, .ru, .tk, .uk, .us, .za
  4. 4. 4 Launch of new TLDs There are typically 3 phases during the launch of a TLD – Sunrise (SR), Landrush (LR) and General Availability (GA).  There is a Sunrise period in which trademark owners can get first claim on domains.  In Landrush, prices are generally higher and there are auctions if more than one person is interested in the same domain.  Early Access Phase (EAP) is a special case, it is recently used and it usually replaces the Landrush. Setup fees vary depending on which day of EAP a registrant choose to purchase a domain.  Finally, the domain enters General Availability and the domains are available to register regularly at the domain registrar.
  5. 5. 5 Life Cycle of a gTLD Domain Source: https://www.icann.org/resources/pages/gtld-lifecycle-2012-02-25-en - Effective 03/2016
  6. 6. 6 What these periods mean? – A Add Grace This period lasts 5 days, and is provided after the initial registration of a domain. In case of deletion during this period, the registry may provides a credit. Registered Depending on the TLD a domain can usually be registered for 1 – 10 years. Auto-Renew Grace This period is provided after a domain registration period expires and is extended (renewed) automatically by the registry. In case of deletion during this period, they registry provides a credit. Redemption Grace Indicates that a registrar has asked the registry to delete a domain. It is possible to restore the domain in this period.
  7. 7. 7 What these periods mean? – B Pending Delete After 5 calendar days following the end of the Redemption Period, the domain is purged from the registry database and becomes available for registration. Pending Restore This status code indicates that a registrar has asked the registry to restore a domain that was in redemption. Transfer Grace This period is provided after the successful transfer of a domain from one registrar to another. In case of deletion during this period, they registry provides a credit.
  8. 8. 8 Domain Name Status Codes Client codes are set by Registrars and Server codes by Registries; Server take precedence over Client codes.  *TransferProhibited This status code prevents a domain from being transferred from one registrar to another.  *DeleteProhibited This status code prevents a domain from being deleted.  *UpdateProhibited This status code locks a domain preventing it from being updated.  *RenewProhibited This status code indicates that a domain name will not be renewed.  *Hold This status code indicates that a domain is not activated in the DNS. * stands for either server or client; serverTransferProhibited, clientTransferProhibited, etc.
  9. 9. 9 Restrictions and Special Cases For some gTLDs (.nyc, .travel, …) and many ccTLDs (.ca, .eu, .sa, …) it is common practice to restrict access to their domains by imposing specific requirements on applicants that wish to register a domain name.  Local Presence The registrant is required to have a physical presence in the respective country or region of the TLD in order to register a domain.  Additional data Depending on the TLD, a registrant is required to additionally provide, e.g.: for an individual – ID card number and date of birth to register .moscow and .hk domains; for an individual or an organization – to declare NGO entity to register .ngo domains; for an organization – to provide company’s registration certificate to register .cn domains, etc.
  10. 10. Thank you!

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