What powers 
lettre.de?
Last seen Aug 2026 · 10 technologies across 8 categories
Analytics
CMS
Ecommerce
JavaScript libraries
Miscellaneous
Programming languages
Web servers
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 59% phone
- 41% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #366,291 of all domains
174 referring domains · OpenPageRank
Page
- Language: German
- Weight: 1.5 MB · 158 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Lettre International
- Founded: 1988
- Country: Germany
From Wikidata (CC0).
Infrastructure
- Hosted on UVENSYS (37.208.110.115)
- DNS: netcup.net
- Email: lettre.de
- Email security: SPF (hard fail), DMARC reject, DNSSEC signed, MTA-STS
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 577,032, 3 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- dropped Tiny Slider May 2026
- detected Tiny Slider Jan 2026