All website URLs consist of the transfer protocol, a second-level domain, and a top-level domain. For example, https://example.com. The “https” indicates the transmission protocol used, while “example” represents the second-level domain, also known as the domain name, and the “com” at the end represents the top-level domain. In addition to these components, a website URL can also contain a subdomain (third-level domain). This allows separate sections of a website to be organized and is always placed before the main domain. An example would be https://blog.example.com. In this case, “blog” is the subdomain of the main domain “example.” Technically, there can be any number of subdomains that precede a main domain. For example, blog.en.example.com.
Subdomains are typically used to separate different types of content, applications, or information. This improves navigation on a website and optimizes the website for search engines. Another useful application of subdomains is for different languages. For example, the English version, for instance, can be found at en.example.com, while the German website can be found at de.example.com.