What powers 
virtuslab.com?
Last seen Sep 2026 · 64 technologies across 26 categories
Advertising
Analytics
Caching
CDN
CMS
Cookie compliance
Databases
Font scripts
Issue trackers
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Live chat
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Security
SEO
Static site generator
Surveys
Tag managers
UI frameworks
Web frameworks
Webmail
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. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt found
- ai.txt not found
Content Signals:
search=yes ai-train=no ai-input=no declared in robots.txt
- Aug 2026 Content Signals changed
- Aug 2026 Content Signals changed
AI Crawlers
No AI crawlers blocked
Standards: llms.txt, Content Signals
Audience
- 75% desktop
- 26% phone
United Kingdom
Poland
United States
Mexico
Switzerland
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.75 / 10 · ranked #274,768 of all domains
95 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 1.9 MB · 119 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 Amazon Web Services (216.150.1.1)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 1,148,595, 17 hosts
- Verified with: 1Password, Apple Business, Atlassian, Brevo, Google, Meta Business, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| lp.virtuslab.com | 29 |
| www.virtuslab.com | 24 |
| careers.virtuslab.com | 23 |
| java.virtuslab.com | 21 |
| bazel.virtuslab.com | 19 |
| virtuslab.com | 18 |
| scalasurvey2023.virtuslab.com | 16 |
| visdom.virtuslab.com | 16 |
| graphbuddy.virtuslab.com | 11 |
| scala-survey-2023.virtuslab.com | 8 |
| scala-survey-2022.virtuslab.com | 7 |
Full technology history →
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Recent changes
- dropped Cookiebot Apr 2026
- dropped Leadfeeder Apr 2026
- dropped Microsoft Advertising Apr 2026
- dropped Microsoft Clarity Apr 2026
- dropped Next.js Apr 2026
- dropped Next.js App Router Apr 2026
- dropped Node.js Apr 2026
- dropped Radix UI Apr 2026
- dropped React Apr 2026
- dropped Reddit Ads Apr 2026
- dropped Webpack Apr 2026
- detected Astro Mar 2026
- detected Cookie Information Mar 2026
- detected Vercel Analytics Mar 2026
- detected Vercel Speed Insights Mar 2026
- detected Cookiebot Dec 2025
- detected Leadfeeder Dec 2025
- detected Microsoft Advertising Dec 2025
- detected Microsoft Clarity Dec 2025
- detected Reddit Ads Dec 2025