Every Domain Extension Explained: Which TLD Should You Choose in 2026?

# Every Domain Extension Explained: Which TLD Should You Choose in 2026?

The domain extension — the part after the dot — affects how people perceive your website, how much you pay each year, and in some cases, how you rank in search results. With over 1,500 TLDs (top-level domains) available in 2026, choosing the right one can feel overwhelming. But in practice, only a few dozen TLDs matter for most businesses and individuals.

This guide covers every extension you are likely to consider, organised by category, with pricing, use cases, and practical advice.

The Standard Three: .com, .org, .net

.com — The Default

Registration: ~$10-14/year | Renewal: ~$10-14/year

The .com extension was originally intended for commercial entities, but it has become the universal default for any website. It is the extension people assume when they hear a domain name. It is the extension that fits every industry. It is the extension with the highest resale value.

If you can get a good .com, get it. The trust advantage is measurable — studies show .com domains receive higher click-through rates in search results compared to most alternative extensions. Google treats all TLDs equally in its algorithm, but user behaviour favours .com.

The downside: most short, memorable .com domains are already taken. You may need to get creative with modifiers (getacme.com, tryacme.com) or consider alternatives.

.org — For Non-Profits and Open-Source

Registration: ~$10-12/year | Renewal: ~$10-12/year

The .org extension carries a strong association with non-profit organisations, open-source projects, and community initiatives. Wikipedia.org, archive.org, and craigslist.org all reinforce this perception.

If you run a non-profit, charity, or open-source project, .org is an excellent choice. It signals mission-driven purpose. If you run a commercial business, .org will confuse people — they will wonder if you are a non-profit and may question your credibility as a business.

.net — The Forgotten Alternative

Registration: ~$12-15/year | Renewal: ~$12-15/year

The .net extension was originally intended for network infrastructure companies. Today, it does not carry a strong specific association. It is the "I could not get the .com" extension, and most users perceive it that way.

That said, .net is still a legitimate choice for technology companies and networking services. Behance.net and speedtest.net are well-known .net domains. If your brand works well with .net and the .com is truly unavailable at any reasonable price, it is an acceptable alternative.

Tech Extensions: .io, .ai, .app, .dev

.io — The Startup Favourite

Registration: ~$35-45/year | Renewal: ~$35-45/year

The .io extension became the unofficial TLD of tech startups around 2015 and remains popular in 2026. It is short, clean, and immediately signals "tech company" to a tech-savvy audience. GitHub uses github.io for its pages service, and countless SaaS products use .io domains.

Worth noting: .io is technically the country-code TLD for the British Indian Ocean Territory, and there have been ongoing discussions about its future given the territory's political status. The practical risk of .io being retired is low in the near term, but it is a factor some businesses consider.

Price is the main downside. At $35-45 per year for renewal, a .io domain costs three to four times more than a .com. If you are bootstrapping, that adds up across multiple years.

.ai — The AI Boom Extension

Registration: ~$80-100/year | Renewal: ~$80-100/year

If you are building an AI product in 2026, .ai is tempting. It is the ccTLD for Anguilla (a small Caribbean island that has profited enormously from the AI boom), and it has become synonymous with artificial intelligence products. Stability.ai, character.ai, and perplexity.ai are high-profile examples.

The cost is significant — $80 to $100 per year — and the registration process can be slower than other TLDs. But for AI companies, the branding value is substantial. A .ai domain immediately communicates your industry focus.

For non-AI businesses, .ai makes no sense. The association is too strong and too specific.

.app — For Applications

Registration: ~$15-20/year | Renewal: ~$15-20/year

Google owns the .app TLD and requires HTTPS for all .app domains — your browser will not load a .app site over unencrypted HTTP. This is actually a feature, as it guarantees baseline security for all .app websites.

The .app extension works well for mobile apps, web applications, and SaaS products. Cash.app (by Block/Square) is the most prominent example. Pricing is reasonable at $15-20 per year.

.dev — For Developers

Registration: ~$12-16/year | Renewal: ~$12-16/year

Another Google-owned TLD, .dev also requires HTTPS. It is designed for developers, developer tools, and technical portfolios. web.dev (Google's own developer resource) is the flagship .dev domain.

If you are building a developer tool or a developer portfolio, .dev is a strong, affordable choice. It signals technical credibility without the cost premium of .io.

Alternative Commercial Extensions: .co, .shop, .online, .store

.co — The .com Alternative

Registration: ~$25-30/year | Renewal: ~$25-30/year

The .co extension (technically the ccTLD for Colombia) has been marketed as a .com alternative since 2010. Companies like Twitter (t.co) and Google (g.co) have used .co for URL shortening, lending it some credibility.

For most businesses, .co is a reasonable alternative if the .com is taken, but be aware that many users will instinctively add the "m" and end up at the .com version. If your competitor owns the .com of your .co domain, you are sending them free traffic.

.shop and .store — E-commerce Extensions

Registration: ~$2-10/year (promotional) | Renewal: ~$30-40/year

Both .shop and .store are marketed toward e-commerce businesses. First-year promotional pricing is often very cheap, but renewal prices are significantly higher. These extensions have not achieved strong consumer recognition, and most e-commerce businesses are better served by a .com or a country-code TLD.

.online — Cheap but Generic

Registration: ~$1-5/year (promotional) | Renewal: ~$30-40/year

The .online extension is aggressively discounted for first-year registrations, which makes it popular for temporary or experimental projects. The extremely low first-year prices also attract spammers, which has given .online a poor reputation. For a legitimate business, it is not recommended.

Country-Code TLDs (ccTLDs)

Country-code TLDs are two-letter extensions assigned to specific countries. They are powerful tools for local businesses and carry special significance in search and user perception.

.no — Norway

Registration: ~$15-20/year | Renewal: ~$15-20/year

The .no extension is managed by Norid and requires the registrant to have a Norwegian organisation number or Norwegian national ID. This restriction actually adds value — every .no domain is verified as belonging to a legitimate Norwegian entity, which builds trust with Norwegian consumers.

For businesses targeting the Norwegian market, .no is the strongest possible choice for local credibility. Google gives .no domains a slight geographic relevance boost in Norwegian search results.

.de — Germany

Registration: ~$8-10/year | Renewal: ~$8-10/year

Germany's .de is one of the most-registered ccTLDs in the world, with over 17 million domains. German consumers strongly prefer .de domains over .com for local businesses. If you are operating in the German market, a .de domain is essential.

.fr — France

Registration: ~$10-12/year | Renewal: ~$10-12/year

France's .fr extension is widely used and respected in the French market. Registration requires an address in the European Economic Area. French consumers, like German consumers, have strong preferences for local extensions.

.co.uk — United Kingdom

Registration: ~$8-10/year | Renewal: ~$8-10/year

The UK's extension is .co.uk (or the shorter .uk, which is also available). British consumers expect local businesses to use .co.uk. The extension is well-established, affordable, and carries strong trust signals in the UK market.

New gTLDs: A Warning

Since 2014, ICANN has released hundreds of new generic TLDs: .xyz, .club, .site, .website, .info, .space, .tech, .life, and many more. While the variety seems appealing, most of these extensions have significant problems for legitimate businesses:

Low trust: Consumers are not familiar with most new gTLDs and may view them as less trustworthy than established extensions.

Spam association: Many new gTLDs offer extremely cheap first-year pricing, which attracts spammers and scammers. This poisons the reputation of the entire extension.

Renewal price traps: First-year prices of $1-5 often jump to $30-50 at renewal. Always check renewal pricing.

No SEO advantage: Google has confirmed that new gTLDs do not receive any ranking advantage over .com or other established extensions.

The exception is industry-specific extensions that have achieved real recognition in their niche: .app, .dev, .io, and .ai have all transcended the "new gTLD" stigma because they are used by prominent, legitimate companies.

Pricing Comparison Table

| Extension | Typical Registration | Typical Renewal | WHOIS Privacy | Best For | |-----------|---------------------|-----------------|---------------|----------| | .com | $10-14 | $10-14 | Usually free | Everyone | | .org | $10-12 | $10-12 | Usually free | Non-profits | | .net | $12-15 | $12-15 | Usually free | Tech companies | | .io | $35-45 | $35-45 | Varies | Tech startups | | .ai | $80-100 | $80-100 | Varies | AI companies | | .app | $15-20 | $15-20 | Usually free | Applications | | .dev | $12-16 | $12-16 | Usually free | Developers | | .co | $25-30 | $25-30 | Usually free | .com alternative | | .no | $15-20 | $15-20 | N/A (Norid rules) | Norwegian businesses | | .de | $8-10 | $8-10 | Varies | German businesses | | .fr | $10-12 | $10-12 | Usually free | French businesses | | .co.uk | $8-10 | $8-10 | Varies | UK businesses | | .eu | $8-10 | $8-10 | GDPR applies | EU businesses |

How to Decide

For most businesses, the decision tree is simple:

1. Can you get a good .com? Get it. 2. Are you a local business? Get your country's ccTLD (and the .com if available). 3. Are you a tech startup? .io, .app, or .dev are legitimate choices. 4. Are you an AI company? .ai is worth the premium. 5. Are you a non-profit? .org is ideal. 6. Everything else? Keep trying for a .com with a modifier before settling on an obscure extension.

The domain extension is important, but it is less important than the domain name itself. A great name on a decent extension will always outperform a mediocre name on .com.