What powers 
lehmannsbib.de?
Last seen Aug 2026 · 19 technologies across 13 categories
CMS
Databases
MySQL
since Aug 2022
Font scripts
Google Font API
since Aug 2022
Twitter Emoji (Twemoji)
since Aug 2022
JavaScript frameworks
Vue.js
since Apr 2026
JavaScript libraries
Flickity
since Feb 2023
Miscellaneous
RSS
since Dec 2022
Performance
Priority Hints
since Sep 2023
Programming languages
PHP
since Aug 2022
Security
reCAPTCHA
since Aug 2022
UI frameworks
Element UI
since Apr 2026
Video players
Web servers
Apache HTTP Server
since Oct 2025
WordPress plugins
Borlabs Cookie
since Sep 2022
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
Open Page Rank
3.91 / 10 · ranked #638,624 of all domains
22 referring domains · OpenPageRank
Page
- Language: German
- Weight: 10.6 MB · 87 requests
- WordPress theme: flatsome (child: flatsome-child) · all themes
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ROUTING Franzstr. 51, 52064 Aachen (213.160.75.61, IPv6)
- DNS: hosting.de
- Email: hosting.de
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 9,684,549, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Element UI Apr 2026
- detected MediaElement.js Apr 2026
- detected Vue.js Apr 2026
- dropped MediaElement.js Mar 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- dropped FingerprintJS Nov 2025
- dropped GoDaddy Nov 2025
- dropped Nginx Nov 2025
- dropped Open Graph Oct 2025
- dropped Yoast SEO Oct 2025