What powers serifhealth.com?
Last seen Sep 2026 · 19 technologies across 11 categories
Analytics
Fathom
since Jul 2024
Google Analytics
since Dec 2022
Linkedin Insight Tag
since Oct 2025
PostHog
since Jan 2026
CDN
Amazon S3
since Dec 2022
Cloudflare
since Feb 2024
Google Workspace
since Dec 2022
Sendgrid
since Jul 2025
Font scripts
Google Font API
since Apr 2023
Issue trackers
Sentry
since Sep 2024
JavaScript frameworks
Marketing automation
HubSpot
since Jul 2025
Miscellaneous
Open Graph
since Apr 2023
PaaS
Amazon Web Services
since Dec 2022
Vercel
since Jul 2024
Security
Cloudflare Bot Management
since Feb 2024
HSTS
since Jul 2024
UI frameworks
Tailwind CSS
since Jul 2024
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.87 / 10 · ranked #1,824,800 of all domains
24 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.4 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (216.150.1.1)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC quarantine, CAA
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 7,985,604, 7 hosts
- Verified with: Google, OpenAI
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.serifhealth.com | 16 |
| app.serifhealth.com | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Segment Aug 2026
- dropped Calendly Jul 2026
- dropped Headless UI Jul 2026
- dropped Priority Hints Jul 2026
- detected PostHog Jan 2026