What powers variantbio.com?
Last seen Sep 2026 · 14 technologies across 11 categories
CDN
Bunny
since Aug 2025
Cloudflare
since Jul 2022
CMS
Craft CMS
since Nov 2023
JavaScript libraries
LazySizes
since Nov 2023
Miscellaneous
HTTP/3
since Dec 2024
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Aug 2022
Programming languages
PHP
since Nov 2023
Security
HSTS
since Sep 2022
SEO
SEOmatic
since Nov 2023
UI frameworks
Tailwind CSS
since Nov 2023
Web frameworks
Yii
since Nov 2023
Webmail
Apple iCloud Mail
since Jan 2023
Google Workspace
since Aug 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
Audience
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.85 / 10 · ranked #1,869,094 of all domains
36 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on Cloudflare (94.247.142.1)
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 2,059,756, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted