A gTLD (generic top-level domain) is a domain ending that is not tied to any country, such as .com, .org, .net or newer endings like .shop, .agency and .london. Most can be registered by anyone, anywhere, and search engines do not treat them as aimed at a particular country.
How a gTLD works
The top-level domain is the part after the final dot. ICANN, the body that coordinates the internet’s naming system, approves each ending and contracts a registry to run it: Verisign runs .com and .net, for example, and Public Interest Registry runs .org. You never deal with the registry directly; you buy and renew through a domain registrar.
For years there were only a handful of generic endings. ICANN’s new gTLD programme, which opened for applications in 2012, added hundreds more, from .app and .blog to place names such as .london, .scot, .wales and .cymru. Some are open to anyone, some have rules about who can register, and a few are reserved for a single company’s brand. Some also carry technical conditions: browsers only load .app and .dev sites over HTTPS, for instance.
Search engines treat gTLDs as international. Google has said it handles new generic endings, including place-based ones like .london, the same way as .com: no location signal and no ranking advantage. A site’s content, address, language and links decide where it is shown instead.
Why it matters
The ending affects how easily people trust and remember the address, and how flexible the site is later. A .com is recognised everywhere and leaves room to grow beyond the UK, because it is not locked to one country the way a ccTLD is. If you ever add country sections, a .com with folders such as /ie/ is the usual structure for international SEO.
For a business that only sells in Britain, though, a .com gives Google no country hint at all. That is rarely a problem when everything else on the site is clearly British, but it means those other signals have to carry the load.
Newer endings bring their own trade-offs. A .london address can look smart on a van or a shopfront, but some customers still type .com or .co.uk out of habit, email addresses on unfamiliar endings get mistyped, and a few cheap endings have a poor reputation with spam filters because they have been widely abused.
Common mistakes
- Buying a keyword ending for rankings. A .plumbing or .accountants ending gives no SEO benefit, and nor does cramming keywords into the name, the old exact match domain tactic.
- Not owning the obvious alternatives. If your site is on .london, a competitor or a scammer can register the .co.uk or .com of the same name.
- Running a .com with no UK signals. Dollar prices left over from a theme demo, US spelling and no UK address make the target market unclear.
- Changing ending on a whim. Moving to a new domain is a full site migration: every URL needs a redirect, and rankings often wobble for weeks while Google processes the move.
How to act on it
Choose with your market in mind. For a business that is UK-only and plans to stay that way, a .co.uk is the clearest choice, and a .com works if the site makes its UK focus obvious. If you plan to sell abroad, a .com usually gives the most room. A newer gTLD makes sense when customers will remember it easily and you also hold the common alternatives.
If you already have an established domain, keep it unless there is a strong business reason to change, such as a rebrand or a legal dispute. If you do move, map every old URL to its new equivalent, set 301 redirects, register the new domain in Search Console, and keep the old one renewed for years afterwards. Planning that move without losing search traffic is what my website migration SEO service is for.