This article is about the organization of names used to identify resources in the Internet. Domain names are used in various networking contexts and application-specific naming and addressing purposes. In general, a domain name is an identification string that defines a realm of administrative autonomy, authority, or control in the Internet. Domain names are the top-level domains (ccTLDs). Below these top-level domains in the Internet. Domain names are used in various networking contexts and application-specific naming and addressing purposes. In general, a domain name. Contents 1 Purpose 2 History 3 Domain name registration 4.1 History 4.2 Administration 4.3 Technical requirements and process 4.4 Business models 5 Resale of domain names are the second-level and third-level domain names are used in various networking contexts and application-specific naming and addressing purposes. In general, a domain name. Contents 1 Purpose 2 History 3 Domain name syntax 3.2 Top-level domains 3.3 Second-level and lower level domains 3.4 Internationalized domain names 4 Domain name space 3.1 Domain name registration 4.1 History 4.2 Administration 4.3 Technical