Domain Name
DomainsDomain Name is a human-readable internet address (such as example.com) that maps to an IP address so users can reach a website, email service, or other online resource. It is registered through a domain registrar, managed via DNS records, and renewed periodically to keep ownership. Domains help branding, trust, and navigation by providing a stable name even if hosting infrastructure changes.
How It Works
A domain name is part of the Domain Name System (DNS), which acts like a directory for the internet. When someone types a domain into a browser, their device queries DNS resolvers to find the authoritative DNS records for that domain. Those records return information such as the IP address of the web server (A/AAAA records) or where email should be delivered (MX records). The browser then connects to the destination server using the returned IP and requests the site.
Domains are organized hierarchically: the top-level domain (TLD) is the suffix (like .com, .net, or a country-code TLD), and the second-level domain is the name you register. You can also create subdomains (like blog.example.com) by adding DNS records. Ownership is maintained by registration and renewal, while day-to-day routing is controlled by DNS settings at the registrar or a separate DNS host. Common DNS records include A/AAAA (web), CNAME (alias), MX (mail), TXT (verification and SPF/DKIM), and NS (delegation).
Why It Matters for Web Hosting
Your domain name must point to your hosting environment for your website and email to work, so DNS management is a practical part of choosing and operating a hosting plan. When comparing hosts, consider how easy it is to update DNS, whether the plan supports multiple domains and subdomains, and how SSL certificates are handled for the domain. A domain can stay the same even if you switch hosting providers, but you must update DNS records (or nameservers) to move traffic cleanly.
Common Use Cases
- Hosting a primary website on a memorable address
- Creating subdomains for apps, staging sites, or regional content
- Setting up business email using MX and related TXT records (SPF/DKIM/DMARC)
- Pointing a domain to a CDN, load balancer, or reverse proxy via DNS
- Domain forwarding or redirects for marketing campaigns and alternate spellings
Domain Name vs URL
A domain name is the core address (example.com) used by DNS to locate a service, while a URL (Uniform Resource Locator) is the full location of a specific resource, such as https://example.com/products/item-1. A URL can include the protocol (http/https), subdomain, path, query string, and fragment. In hosting terms, you register and manage the domain, then configure the domain to serve the correct website and URLs from your hosting account.