Your domain name is the address people use to reach your website, and its extension — the ending like .com or .net — is part of how it looks and feels. This guide explains the common extensions and how to choose the right name for your site.
What is a domain extension?
A domain extension (also called a top-level domain, or TLD) is the part after the final dot: .com, .net, .org, .io and hundreds more. Extensions are managed by registries and sold through registrars, and each one may have slightly different rules and prices.
The common extensions
| Extension | Typical use |
|---|---|
| .com | The default choice — suits almost every website |
| .net | Technology companies, networks and online services |
| .org | Non-profits, charities and community groups |
| .co | A shorter, modern alternative to .com |
| .io, .app, .dev | Software products, startups and app developers |
.com is the most widely recognised extension and is often what visitors type automatically, so it's a safe default for businesses. If your preferred .com name is taken, .net and .co are the best-known fallbacks.
How to pick a name
- Keep it short and easy to spell — ideally no numbers or hyphens, which are easy to mistype.
- Match your brand — your domain should look close to your business name, product or common keywords.
- Check the other extensions — if the .com is taken, a clear .net or .co beats a jumbled .com.
- Register close variants of your name when you can, so look-alike sites can't trade on it.
Pricing and renewal
Domain prices vary by extension and are billed yearly at WebFulHost. A domain is included free for the first year when you purchase an annual hosting plan, then renews at its standard rate. You'll receive a reminder before each renewal date. See How to Renew Your Hosting and Domain.