What powers 
qstraint.com?
Last seen Sep 2026 · 34 technologies across 21 categories
Analytics
CDN
CMS
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript graphics
JavaScript libraries
LMS
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Search engines
Security
UI frameworks
Webmail
Widgets
WordPress plugins
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 58% desktop
- 42% phone
United States
Canada
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.97 / 10 · ranked #589,568 of all domains
86 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 50 ms |
| CLS | 0.15 |
| TTFB | 1900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 2.9 MB · 106 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Q'STRAINT
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Cloudflare (104.26.4.15, IPv6)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC reject
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 2,350,402, 13 hosts
- Verified with: Brevo, Google, KnowBe4, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| training.qstraint.com | 26 |
| www.qstraint.com | 24 |
| nts.qstraint.com | 15 |
| brackets.qstraint.com | 12 |
Full technology history →
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