Internet domains provide a centralised administrative framework for the management, distribution, and consumption of internet-based services. Because of the inherent connection between domain structure and naming conventions, the terms “domain” and “domain name” are frequently used synonymously in internet parlance.
The Domain Name System (DNS) is an application layer protocol and service that is used by networks to resolve host names to their corresponding Internet Protocol (IP) addresses. Domain Name System (DNS) is a crucial part of the internet. A global network of DNS servers implements this decentralised, hierarchical architecture. To resolve domain names to IP addresses and IP addresses to domain names, the service operates as a global phone book.
Through the Domain Name System (DNS), consumers can get to websites without having to memorise complex IP addresses. If you want to visit TechTarget but don’t know its IP address, you can still do so by entering techtarget.com in your browser’s address bar with the use of domain name system (DNS).
Domains on the Internet are identifiable by their respective IP addresses. Any internet-connected gadget can now have one-to-one communication with any website thanks to these addresses. DNS’s hierarchical naming scheme streamlines communication.
The Root domain, the top-level node of the Internet’s domain tree, lies at the very top of this structure. Multiple top-level domains (TLDs) are directly subordinate to the root domain in the DNS system. TLDs are used to indicate a shared identity, such as a country or industry. Domain extensions such as.com,.net,.org,.gov, and even country codes are all examples of TLDs.
Below the TLDs is the hierarchy of individual domains like techtarget.com, usda.gov, and redcross.org. Each top-level domain (TLD) is associated with a particular second-level domain (SLD), which is specified by the domain’s last segment. Sites like techtarget.com, usda.gov, and redcross.org all fall under their respective top-level domains (TLDs). The techtarget.com domain is an example of a second-level domain, and it has the subdomains searchstorage.techtarget.com and searchdatabackup.techtarget.com.