If you are preparing to launch your first website, you will encounter terms like domain name, URL, TLD, and path almost immediately. These concepts are closely related but not identical, and confusing them can lead to mistakes when you configure your site or share links with others. This article walks through each piece of a website address using a clearly hypothetical example, so you can recognize what every part does before you go live.
Reading a Website Address Piece by Piece
Suppose you are building a small photography portfolio and you plan to publish a blog post about your first outdoor shoot. The address you intend to share with visitors looks like this: https://www.myphotoportfolio.com/blog/first-outdoor-shoot?format=grid#gallery. This is a hypothetical example created for explanation; no such site necessarily exists. Before you type anything into a registrar's form or paste a link into a social media profile, it helps to know what each segment of that string actually represents.1
Starting from the left, https is the scheme, telling the browser which protocol to use when requesting the page. The section www.myphotoportfolio.com is the domain name, identifying the specific web server that hosts your content. Everything after the domain and before the question mark, /blog/first-outdoor-shoot, is the path, pointing to a particular resource on that server. The portion after the question mark, format=grid, is a query parameter that passes extra instructions to the server. Finally, #gallery is an anchor that directs the browser to a specific spot within the page itself. Each of these parts has a distinct role, and understanding them separately prevents confusion when you later configure your site or troubleshoot a broken link.1
Notice that the domain name is only one component of the full URL. A domain name by itself identifies a server, while a complete URL identifies a specific resource on that server. This distinction matters because you will register a domain name once, but you will create many different URLs as you add pages, images, and blog posts to your site.21
What a Domain Name Is and Why It Exists
Domain names are a key part of the Internet infrastructure. They provide a human-readable address for any web server available on the Internet. Every Internet-connected computer can be reached through a public IP address, such as 192.0.2.172 in IPv4 format or a longer string in IPv6 format. Computers handle these numeric addresses easily, but people have a hard time remembering them or figuring out who is running the server behind a given number. Domain names solve this problem by giving each server a memorable, text-based label.2
A domain name has a simple structure made of several parts separated by dots and read from right to left. The rightmost part is the top-level domain, or TLD, which tells users the general purpose of the service. The labels that follow the TLD narrow the address down to a specific organization or individual. For example, in developer.mozilla.org, org is the TLD, mozilla.org is the second-level domain name, and developer is a subdomain. All together these constitute a fully-qualified domain name.23
Each label in a domain name is a case-insensitive character sequence that can contain letters A through Z, digits 0 through 9, and the hyphen character, though a hyphen may not appear as the first or last character of a label. A single label can be anywhere from one to sixty-three characters in length. The label located directly before the TLD is also called the second-level domain. You do not need three labels to form a valid domain name; two is sufficient, as in example.com.2
How a URL Extends Beyond the Domain Name
A URL, or Uniform Resource Locator, is the address of a unique resource on the internet. It is one of the key mechanisms used by browsers to retrieve published resources such as HTML pages, CSS documents, and images. In theory each valid URL points to a unique resource, though in practice a URL may point to something that no longer exists or has moved. The domain name sits inside the authority section of the URL, but the URL can also include a scheme, a port number, a path, query parameters, and an anchor.1
A useful way to think about the relationship is through a postal analogy. The scheme represents the postal service you want to use, the domain name is the city or town, and the port is like the zip code. The path represents the building where your mail should be delivered, the parameters represent extra information such as the apartment number, and the anchor represents the actual person to whom you have addressed your mail. This analogy is not perfect, but it helps you remember that the domain name alone does not tell the browser exactly which page to load.1
The path and query parameters are the parts you will interact with most often as a site owner. The path tells the server which resource you are requesting, and in modern web servers it is mostly an abstraction handled by software rather than a physical file location. Query parameters are key-value pairs separated by the ampersand symbol, and the web server can use them to customize the response before returning it. Each web server has its own rules regarding parameters, so if you are unsure how a particular parameter behaves on your platform, check your hosting documentation.1
Choosing a Top-Level Domain
A TLD is the most generic domain in the Internet's hierarchical domain name system and serves as the final component of a domain name. ICANN, the Internet Corporation for Assigned Names and Numbers, designates organizations to manage each TLD. Depending on how strict an administrating organization might be, a TLD often serves as a clue to the purpose, ownership, or nationality of a website.3
IANA distinguishes several groups of top-level domains. Country-code top-level domains, or ccTLDs, are two-character domains established for countries or territories, such as .us for the United States. Generic top-level domains, or gTLDs, have three or more characters and include familiar options like .com, .org, and .net. Sponsored top-level domains are proposed and sponsored by private organizations that decide whether an applicant is eligible to use the TLD based on community theme concepts. The most generic TLDs such as .com, .org, and .net do not require web services to meet any particular criteria, but some TLDs enforce stricter policies.23
For a first-time site builder, the practical takeaway is straightforward. If your project does not fall under a restricted category like government or education, a common gTLD such as .com or .org will work without additional eligibility requirements. The full list of TLDs is maintained by ICANN, so if you are curious about less common options you can look there. The choice of TLD does not change how the rest of your URL functions; it simply forms the rightmost label of your domain name.23
Registering a Domain Name
You cannot technically buy a domain name. Instead, you pay for the right to use a domain name for one or more years. You can renew your right, and your renewal has priority over other people's applications, but you never own the domain name outright. This system exists so that unused domain names eventually become available for someone else to use. Companies called registrars use domain name registries to keep track of the technical and administrative information that connects you to your domain name.2
Check the spelling of your desired domain name carefully before you submit payment. Once a registration is completed, it is too late to change the name without going through the process again. To find out whether a given domain name is available, go to a registrar's website; most provide a whois service that tells you whether a name is already taken. Alternatively, if you use a system with a built-in shell, you can type a whois command directly. If the query returns no result, the domain does not exist in the whois database and could be registered.2
Record your registrar account credentials and renewal date in a place you will actually check. Because you are paying for the right to use the name rather than owning it permanently, letting a registration lapse means someone else can register that same name. The registrar will also ask for your real-world address during the process. Make sure you fill it in properly, since in some countries registrars may be required to close the domain if they cannot provide a valid address.2
Preparing Your Addresses Before Launch
Write down the full URL for every page you plan to publish before your site goes live. This simple habit helps you spot inconsistencies in your path structure, such as mixing uppercase and lowercase letters or using spaces where hyphens would be clearer. URLs represent a human-readable entry point for a website, and building what are called semantic URLs, which use words with inherent meaning that can be understood by anyone regardless of their technical know-how, is considered best practice.1
Use a consistent pattern for your paths. If your blog posts live under /blog/post-title, keep that structure for every post rather than switching to /articles/post-title halfway through. Consistent paths make it easier for you to manage links internally and easier for visitors to guess where they are on your site. The advantages of human-readable URLs include easier manipulation on your end, clearer orientation for users, and potential benefits for how search engines classify your pages.1
Before you share your address publicly, type the complete URL into a browser address bar yourself and confirm it loads the correct page. Check that the scheme shows https if you have set up a secure connection, that the domain resolves to your server, and that the path leads to the content you expect. If any part of the URL returns an error or an unexpected page, review that segment against the structure described earlier. This quick verification step takes only a moment and can save you from sharing a broken link with your first audience.1
Frequently asked questions
Is a domain name the same thing as a URL?
No. A domain name identifies a web server, while a URL is a complete address that can also include a scheme, path, query parameters, and an anchor to point to a specific resource on that server. The domain name is one component inside a URL.21
Do I own my domain name after I register it?
You do not own it outright. You pay for the right to use the domain name for a set period and can renew that right, but the name is never permanently yours. If you stop renewing, it eventually becomes available for others to register.2
Can I use any top-level domain for my personal website?
Most generic TLDs like .com, .org, and .net do not require you to meet particular criteria. However, some TLDs such as .gov or .edu are restricted to specific types of organizations, and certain country-code TLDs may have their own eligibility rules.23