1. Top-Level Domain (TLD): This is the highest level in the DNS hierarchy and serves as the broad categories of domain names. Examples of TLDs include .com, .org, .net, and .gov.
2. Second-Level Domain (SLD): The SLD comes immediately after the TLD and identifies specific entities, organizations, or websites within the TLD. It typically represents the name of the organization, company, or website using the domain.
3. Subdomain: Subdomains further divide the SL D o r provide additional hierarchical levels within the domain name. Subdomains are commonly used to organize different sections or departments of a website, such as www, mail, blog, etc.
The sequence can be summarized as follows:
For example:
www.example.com
In this case, "www" is the subdomain, "example" is the Second-Level Domain, and ".com" is the Top-Level Domain.