Published: 17.10.2026
The .lu extension is the country-code domain of Luxembourg, a small country in Western Europe that lies between Belgium, France and Germany. Luxembourgish, French and German are all official languages there, which makes the zone a useful choice for sites that speak to several language groups. Companies and organisations that serve Luxembourg use .lu to show their local base. Use the availability form just below this text to see whether your name in .lu is still free.
Check if a .lu domain is available .lu Check
A short history
Luxembourg received its national code in the early years of the internet. Over the following years the zone grew alongside the country's banks, investment funds, universities and public institutions, and later spread to shops, consultants, tourism businesses and local services. Luxembourg hosts several European institutions, so the zone is used both by local firms and by organisations with a wide range of international contacts.
Who runs it
The .lu zone is managed by RESTENA DNS-LU, a non-profit service linked to the national research and education network. It keeps the registry and sets the rules for registration, while accredited registrars sell names to customers and pass the orders on. Because the rules are published by the registry, they are the place to check any question about eligibility, holder data or renewal.
Rules in practice
- Holder conditions: the registry may set conditions on who can hold a .lu name, so check the current rules before you order.
- Contact details: the data entered must be accurate, and it may be verified when the registry requires it.
- Length and characters: names use letters, digits and hyphens, and a single label can be up to 63 characters long.
- Renewal: keep the expiry date in your calendar and enable automatic renewal with your registrar.
Who uses .lu
- Banks, investment funds, insurers and consultants that serve local and cross-border clients.
- Law firms, accountants and other professional services based in Luxembourg.
- Shops, restaurants, hotels and tourism operators in the country.
- Clubs, schools, cultural projects and associations working in one or more of the national languages.
Strengths
- The ending gives a clear Luxembourg base, which helps local customers recognise the business at a glance.
- Search engines can treat a country-code ending as one geographic hint, so local-language content may match local searches.
- The name is short and easy to spell, which suits a site that must be understood in several languages.
Things to keep in mind
- A .lu name points to Luxembourg, so a business whose customers are mostly in a neighbouring country may also want a generic or regional address.
- Because the country uses three official languages, decide early which versions the site will have and make the main pages match.
- Short names built from common words may already be registered, so a descriptive wording can be the better choice.
- Rules for holders can change, so keep your registration data current.
Tips before you register
- Check the same name in .com and decide whether you need both addresses.
- Enter company details exactly as they appear in the official trade register or in your business papers.
- Plan the language versions of the site, plus a clear legal notice and contact page.
- Set up SPF, DKIM and DMARC records before the domain is used for e-mail.
- Turn on auto-renewal and give two trusted people access to the registrar account.
Frequently asked questions
Do I need a company in Luxembourg to register .lu? Holder conditions may apply, so check the current terms before you order, since they decide who may register a name.
Does .lu help a site appear in Luxembourg search results? It is a useful local signal, but clear content in the right language, fast pages and genuine local links usually matter more.
Can a site in English use .lu? Yes. The ending does not set the language, although local visitors may also value French or German content.
