List of .lu Zone Domains

.lu Domain Zone Datasets

Download a .lu domain name list or a full dataset with DNS, server IP, emails, and phone numbers.

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Zone TLD: .LU

Zone type: country-code (ccTLD)

Update frequency: monthly (last updated on September 10, 2026)

Total domains monitored: 47,227

Tracked domains included in datasets: 47,227

Datasets available:
Basic Domain List (download sample 💾)
Detailed Domain Dataset (download sample 💾)

The vertical axis uses only this chart's value range so small changes over time are easier to see.

Dataset type
choose a type		 Last updated
next update: tomorrow 		Total domains
in current dataset		 Emails
crawled from websites 		Phones
crawled from websites
Basic Domain List September 10, 2026 47,227 --- --- Download GET
Detailed Domain Dataset September 10, 2026 47,227 YES YES Download GET

How many .lu domains are there?

As of September 10, 2026, the .lu domain list contains 47,227 tracked .lu domains, 0.013% of all domains tracked by NetAPI, which makes .lu the #192 largest of 1,584 zones. The list grew by +444 (+0.949%) over the last 30 days and by +6,638 (+16.4%) year over year.

47,227
tracked .lu domains
+444
30-day change (+0.949%)
+1,657
90-day change (+3.64%)
+16.4%
1-year growth (+6,638)
#192 of 1,584
zones by size
0.013%
of all tracked domains

Newly discovered .lu domains are added to the list daily, with a full refresh every one to two months (how updates work). 214 .lu domains are in the free NetAPI Top 1M. See the Top 1M list. 13 .lu domains are currently listed in the compromised domains feed (0.028% of the zone). See the TLD abuse report.

Frequently Asked Questions

See our FAQ for more answers.

Can I download sample datasets for the .lu zone?

Yes. Download a sample .lu domain list or a sample .lu dataset.

What is a basic domain list, and how does it differ from a detailed dataset?

Both cover the same 47,227 registered domain names in the .lu zone. A basic list is one domain name per line in a gzip CSV. A detailed dataset adds DNS servers, server IP, hostname, emails, phone numbers, and more. See the dataset format details.

How often are .lu datasets updated?

The .lu zone is a country-code (ccTLD) zone, and its registry zone file is not directly accessible. NetAPI discovers .lu domains through large-scale crawls: newly discovered domains are added to the list daily, and the full dataset is rebuilt every one to two months. See how updates work.

Can I download only newly registered .lu domains?

Not for this zone. Newly discovered .lu domains are merged into the active list daily, but there is no separate new-domains file for .lu. Daily new-domains lists exist for the zones marked as updated daily in the datasets catalog.

What format and size is the file?

Every .lu domain list and dataset is a CSV file compressed with gzip (.csv.gz): the basic list has one domain name per line, the detailed dataset has one row per domain with the columns described in the dataset format details. Compressed, the current .lu basic list is about 256 KB and the detailed dataset about 770 KB. Any archiver opens gzip files, for example the free 7-Zip on Windows, and the API can also serve the files uncompressed (format=plain).

How do I automate daily downloads?

Schedule automatic downloads through the API. See the API documentation for authentication and endpoints.

Are emails and phone numbers available for every domain?

No. We collect contact details from public websites when available. Many domains have no published email or phone, and we do not guarantee these fields on every row. Do not use the data for unsolicited bulk outreach.

Related domain zones

Other zones you can download alongside .lu — lists and datasets in the same format.

Similar in size

Largest country-code zones

Largest generic zones

Additional .LU Zone / Registry Information

Restena — .lu registry logo

Zone Registry: Restena

Dispute Policy: link

Registry Policy: link

The .lu, Luxembourgian is a country-code top-level domain. This domain extension is reserved for businesses associated with the country and represents its ISO 3166-1 alpha-2 code. It does not yet support second-level domains. Businesses, organizations, and individuals in Luxembourg use this domain to build a robust online presence and advertise their goods and services.

The .lu is becoming widely recognized. This domain has become a symbol of credibility and trust for academic institutions and government organizations.

Over 114,000 .lu domains have been registered as of 2022 which shows the domain's capability to offer a reliable and distinctive namespace.
RESTENA, the Research Unit in Networking of the University of Luxembourg, is in charge of administering the .lu domain, which was first introduced in 1995. As of February 1, 2010, the administrative contact is no longer required to have their headquarters in Luxembourg.

Compromised .lu Domains

Live compromised domain count per day (last 30 days).

The list of compromised domains in the .lu zone can be downloaded here.

The full list of compromised domains can be downloaded here.

Chart Y-axis is scaled to the data range to show day-to-day changes (not from zero).

Based on this dataset and daily threat-intelligence signals. Domains may be listed after observed phishing, malware, spam, botnet, or similar activity; inclusion does not imply malicious intent by the owner, registrar, registry, or host. Updated daily; figures may change as new data arrives.

Questions? See our FAQ or contact us.

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