Domain Extensions
The Full List of TLDs and How to Choose One

Start from .com and only move off it for a reason. It carries the most trust, it is what customers type from memory, and Sedo's market data shows it makes up the majority of aftermarket sales, which means it also holds value best if you ever sell. If the exact .com you want is available and affordable, the decision is already made. Everything below is about what to do when it is not.

For a tech or developer product, .io and .ai are genuinely accepted, not compromises. Your audience reads them instantly and does not think less of a SaaS on .io or an AI tool on .ai. The cost is the catch: both renew for far more than .com every year, so factor that into a long hold. If you want the shortest possible route to a .com feel without the .com price, .co is the classic move, and it reads as company or corporation to most people.

Match the extension to the job when a descriptive one fits: .org still signals a cause or community, .store and .tech describe what you do, and .app or .dev come with enforced HTTPS that quietly signals a technical product. Where the honesty matters is the long tail. The 1,500-plus niche extensions exist, but most customers do not trust an ending they have never seen, and those names resell poorly. A strong name on a trusted extension beats a clever name on an obscure one almost every time. Browse curated inventory by ending on our premium .com, .io, .ai and .co pages.

Every extension is one of two kinds. A generic top-level domain, or gTLD, is open to anyone: .com, .net, .org, .app, .dev, .xyz and hundreds of newer descriptive endings all fall here. A country-code top-level domain, or ccTLD, was originally assigned to a specific country or territory, using its two-letter code. Some ccTLDs are used strictly for local sites, but several have been repurposed as brandable global endings because the two letters happen to mean something useful.

That is the story behind the tech world's favorite extensions. .io belongs to the British Indian Ocean Territory, .co to Colombia, .ai to Anguilla, and .me to Montenegro, yet each is used far more for its wordplay than for its geography. The practical thing to know as a buyer is that repurposed ccTLDs are priced and controlled by the country's registry, which is why .ai renews for a lot more than a .com and why availability and rules can differ. For a US business, a gTLD like .com or a globally adopted ccTLD like .io reads as neutral, while a lesser-known country code can accidentally signal a local focus you did not intend. Once you have chosen, our guide to how much a domain name costs breaks the pricing down in full.