URL broken into labeled parts showing protocol subdomain domain path and query string

Domain Management

What Is a URL? Every Part Explained Simply (With Examples)

Domain 360 Team

·July 1, 2026·6 min read

Every time you click a link or type a web address, you are using a URL. The term is everywhere — but most people have never had its structure explained clearly. Understanding URLs is more useful than it might seem: it helps you navigate websites, spot phishing attempts, understand how web applications work, and diagnose connection problems.

Quick answer: Every web address follows the same structure — but most people only recognise the domain name in the middle. Here is what every part of a URL does, explained with real examples.

What Does URL Stand For?

URL stands for Uniform Resource Locator. The name is revealing: uniform means it follows a standardised format, resource means it points to a specific thing (not just a website — a page, image, video, file, or API response), and locator means it tells you how to find it.

What Is the Anatomy of a URL?

Take this example URL: https://www.domain360.site/blog/how-to-flush-dns?ref=search#step-2

Each segment has a name and a function.

Scheme (Protocol)

https:// is the scheme. It tells your browser which protocol to use to retrieve the resource. https means HyperText Transfer Protocol Secure — the encrypted version of http. The browser establishes an SSL/TLS connection before sending any data.

Other schemes: http:// (unencrypted, legacy), ftp:// (file transfers), mailto: (email), file:// (local files), data: (inline data).

Subdomain

www. is a subdomain. Subdomains are labels to the left of the domain name, separated by dots. They are completely optional and defined by whoever manages the DNS for the domain.

Common subdomains: www (the web server, traditional but not required), blog (a separate blog), app (a web application), api (an API endpoint), mail (used by some mail systems). A CNAME or A record in DNS resolves each subdomain to a server.

Domain Name

domain360.site is the domain name. This is the human-readable identifier that maps to one or more IP addresses via DNS. It has two parts: the second-level domain (domain360) and the top-level domain or TLD (.site). Together they form the registered domain — the one that needs to be registered, renewed, and tracked.

The domain is the component with the most ownership implications. You buy the domain from a registrar, protect it, and renew it annually. Everything else in a URL is either configuration (protocol, path) or infrastructure (DNS, servers). The domain is the anchor.

Path

/blog/how-to-flush-dns is the path. It specifies the exact resource requested on the server, analogous to a file path on a computer. The server interprets the path to determine what content to return.

Paths can be static (pointing to actual files on the server) or dynamic (interpreted by web application code). Modern web frameworks typically use dynamic paths that map to database queries or application logic.

Query String

?ref=search is the query string. Starting with ?, it passes additional parameters to the server. The format is key=value, with multiple parameters separated by &. Query strings are used for search terms, filters, analytics tracking (ref=search tells the server this visitor came from search), session state, and API parameters.

Fragment

#step-2 is the fragment identifier, sometimes called a hash. It references a specific section within the page — the browser scrolls to the element with id="step-2" without sending a new request to the server. Fragments exist and are processed entirely in the browser, which is why they appear in URLs but do not appear in server logs.

URLs and Phishing: What Should You Check?

Understanding URL structure makes phishing attempts more identifiable. Attackers often exploit the fact that most users only read the middle of a URL — the part that looks familiar.

In the URL http://paypa1.com.suspicious-domain.net/login, the actual domain is suspicious-domain.net, not paypal.com. The paypa1.com.suspicious-domain.net is a subdomain of suspicious-domain.net — the registrant controls the whole thing. The trusted-looking part before the last dot-separated segment before the slash is not the actual domain.

Always read URLs from the right side of the domain backward: find the slash, look left to the first dot, that is the TLD, look left to the next dot, that is the registered domain. If it does not match where you expect to be, do not proceed.

Why Is the Domain Name at the Center of a URL?

Of all URL components, the domain is the one with real-world ownership and renewal implications. A path or query string can change at any time with no external consequence. A domain that lapses means the entire URL — and everything else that depends on it — stops working. Our domain management guide covers keeping every domain you own reliably maintained.

Quick Answers

What does URL stand for?

URL stands for Uniform Resource Locator. It is the standardised address format used to identify resources on the internet — web pages, images, files, API endpoints, and anything else accessible via a network. Every URL uniquely identifies both the location (which server) and the path (which specific resource on that server).

What is the difference between a URL and a domain name?

A domain name is the human-readable name that identifies a website or server (example.com). A URL is the full web address including the protocol, domain name, path, and any query parameters (https://www.example.com/blog/post?id=42). The domain name is one component of the URL.

What are the parts of a URL?

A URL has several parts: the scheme/protocol (https://), optionally a subdomain (www.), the domain name (example.com), the path (/blog/post), optionally a query string (?id=42), and optionally a fragment (#section). Not all URLs include every part — the scheme and domain are always required.

What is the difference between http and https?

http sends data between browser and server in plain text. https uses SSL/TLS encryption to protect data in transit. All modern websites should use https — search engines like Google flag http sites as insecure, browsers show warnings, and plain-text connections can be intercepted. Both are valid URL schemes, but https is standard.

Can a URL exist without a domain name?

Yes. A URL can use an IP address instead of a domain name (http://93.184.216.34/path), or it can reference a local file (file:///Users/name/Documents/page.html). However, almost all web URLs use domain names because IP addresses are not memorable and domains allow the underlying server to change without breaking links.

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