What powers siren.io?
Last seen Aug 2026 · 33 technologies across 23 categories
Advertising
Microsoft Advertising
since Oct 2024
Analytics
Google Analytics
since Feb 2019
Caching
Varnish
since Aug 2026
CDN
CMS
Cookie compliance
Databases
MySQL
since Feb 2019
Sendgrid
since Aug 2022
Font scripts
Font Awesome
since Jul 2020
Google Font API
since Feb 2019
IaaS
Google Cloud
since Oct 2022
JavaScript libraries
Marketing automation
HubSpot
since Apr 2020
Miscellaneous
PaaS
GitHub Pages
since Aug 2026
Page builders
WordPress Block Editor
since Jul 2024
Programming languages
PHP
since Feb 2019
Security
HSTS
since Sep 2022
SEO
Tag managers
Google Tag Manager
since Feb 2019
Video players
YouTube
since Nov 2023
Web servers
Apache HTTP Server
since Feb 2019
Webmail
Apple iCloud Mail
since Jan 2023
Google Workspace
since Aug 2022
WordPress themes
Twenty Seventeen
since Feb 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
4.47 / 10 · ranked #406,206 of all domains
75 referring domains · OpenPageRank
Page
- Weight: 2.4 MB · 97 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Hetzner (95.216.219.103)
- DNS: first-ns.de
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only, CAA
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 1,906,494, 12 hosts
- Verified with: Apple Business, Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| siren.io | 24 |
| docs.siren.io | 10 |
| addons.siren.io | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped reCAPTCHA Jan 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- detected reCAPTCHA Nov 2025