What is a domain?

The structured Domain Name System (DNS) resolves a domain name into the associated IP address and vice versa. This information is stored on so-called name servers. 

Advantage over IP addresses here is of course the easy memory and readability. It is much easier to remember and type www.mydomain.tld than the respective IP address, for example 

If the visitor calls up the respective domain, a request is sent to the responsible name server, which compares the domain name with the database entries and transmits the stored IP address to the browser.www.   Do a domain check

General information about domains

  1. Building a domain
    • What is a Second Level Domain?
    • What is a TLD?
    • What is a subdomain?
  2. Can I register any domain?
  3. What can I do with a domain?
  4. More questions and answers about domains

Building a domain

What is a Second Level Domain?

Domains are divided into three levels based on the Domain Name System (DNS) hierarchy, each separated by a period. The next level next to the top level domain is called a second level domain and forms the actual domain.

What is a TLD?

The first level on the far right, ie the domain extension itself, is referred to as a top-level domain (TLD).

What is a subdomain?

A subdomain is another subdivision of the main domain. It is hierarchically under the main domain and is often referred to as a third level domain. Subdomains are always prefixed to the domain name with a dot.

Here’s an example from https: //shop.mydomain.tld:

  • “.tld” is the first level, top-level domain or the domain extension
  • “meinedomain” is the second level, the second level domain or the domain
  • “shop” is the third level, ie third-level domain or subdomain
  • “https” stands for Hypertext Transfer Protocol Secure and is the transmission protocol. In contrast to “http” (Hypertext Transfer Protocol), “https” uses encrypted transmission (through the use of an SSL certificate ).

Can I register any domain?

No, certain domain endings have policies and certain requirements that have to be met in order to register a domain.

Some examples:

  • .eu Domains can only be registered by natural persons or legal entities that reside in an EU member state or belong to an EU member state.
  • Registering a .berlin domain requires configured name servers. The Domain Owner, Admin or TechC of the domain must have a valid address in Berlin. It can not be a mailbox.
  • .ru Domains can only be registered by companies (even unregistered sole traders). This will be checked during registration. It is therefore necessary to send a copy of the company booklet (passport copy for sole traders) to the registrar.
  • The .film registration regulations allow registrations only for members of a film organization, if there is a close connection with the domain name or for rights holders of a film title.
  • .health domains can be registered by anyone worldwide. For .health domains, there are restrictions on the content allowed. For example, miracle cures, designer drugs, psychoactive products and the like may not be advertised or distributed via .health domains.

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