What powers karlonline.org?
Last seen Aug 2026 · 22 technologies across 14 categories
CMS
WordPress
since Jun 2020
Cookie compliance
Databases
MySQL
since Jun 2020
Font scripts
Google Font API
since Jun 2020
Hosting
IONOS
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Page builders
Performance
Priority Hints
since Sep 2023
Programming languages
Security
Really Simple SSL & Security
since Apr 2024
Web servers
Apache HTTP Server
since Jun 2020
WordPress plugins
WordPress themes
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
3.38 / 10 · ranked #1,029,353 of all domains
46 referring domains · OpenPageRank
Page
- Language: German
- Weight: 0.9 MB · 60 requests
- WordPress theme: oceanwp · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Karl-Verlag (Karl on Wikidata)
- Founded: 1984
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on IONOS (217.160.0.174, IPv6)
- DNS: IONOS
- Email: no MX record returned
- Email security: DMARC monitor only
- SSL: Sectigo, RSA 2048, wildcard, expires Mar 2027
- Common Crawl link graph: rank 837,107, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Apache HTTP Server Jul 2026
- detected Contact Form 7 Jul 2026
- detected CookieYes Jul 2026
- detected core-js Jul 2026
- detected Elementor Jul 2026
- detected Flickity Jul 2026
- detected Google Font API Jul 2026
- detected IONOS Jul 2026
- detected jQuery Jul 2026
- detected jQuery Migrate Jul 2026
- detected jQuery UI Jul 2026
- detected Lightbox Jul 2026
- detected MySQL Jul 2026
- detected OceanWP Jul 2026
- detected Open Graph Jul 2026
- detected PHP Jul 2026
- detected Priority Hints Jul 2026
- detected Really Simple SSL & Security Jul 2026
- detected RSS Jul 2026
- detected Swiper Jul 2026
- detected WordPress Jul 2026
- detected Yoast SEO Jul 2026