Top Level Domain related
Each name of the Internet domain consists of the following strings, separated by dots. The name Top Level Domain in this context means the last name in the episode and is the highest level of name resolution. If the complete domain name of the computer or the website, such means, for example de.example.com is. Com as the Top Level Domain. In the system of domain names to reference the entire name, including the Top Level Domains. The office of registration shall submit as a database entry that is about the owner. This entry allows the query to the same protocol - the principle of the telephone book .
Generic Top Level Domains
The generic Top Level Domains are separated by sponsored and not sponsored. The more important, that is not sponsored domains are controlled by ICANN and the Internet Society. The sponsored get their control and funding of the independent organizations that have the right to their own guidelines when it comes to the forgiveness of the domain name to use - such as mil. , Which shall only be used by the U.S. military. The top level domain is most needed. Is com, which has been used at the beginning of the American companies. Today it is present all over the world. Every country has the right to use the guidelines for the award of their own domain set. The policies may differ but very different, because there are several technical requirements and legal requirements.
settings and two-digit domains
It is for example in the French Top Level Domain. fr need for the domain owner has residence in France. What Germany was concerned, at the end of 2009 with the allocation of single-digit and two-digit, from both existing domain names with only numbers. De. Up to the time it was necessary that was. Com domain 3 character. One of the characters had to be here a letter. From the early days of the online world still are the tens of domains, such db.de, hq.de and ix.de. There was also a two-letter domain bb.de that has been registered but not in 2009.
The rule in Switzerland for TLD
In Switzerland, cantons have only the domain with two characters. This results from the official abbreviation, such as ar.ch, ge.ch, ur.ch and zh.ch. The Federal Chancellery uses exclusively the domain ch.ch. The exceptions are ignored must be a Swiss domain of at least three characters. Exceptions are www.expo.02.ch - the domain has been used to the Swiss national exhibition in 2002, and au.ch that is used by the community in St. Gallen Au.
The name server group DENIC and ICANN
for each Top Level Domain is the set of name servers that manage the complete name space for this domain. It mostly happens with the delegations to other servers. The domain-specific name server can be reached via the root name. There is also a central database of all second-level domains, which are established under this top level domain, contains administrative information. They are, for example, the name and address of domain owner. This database can be obtained through the Whois service access. The operation of the server and the database assigns an organization that is charged for each domain by ICANN. This is then called in the registry of Internet terminology. The. Com top level domain is managed by companies such as VeriSign. De by DENIC. This registry has the task of the award directly subordinate second-level domains, such as example.com.