What powers upstreambio.com?
Last seen Sep 2026 · 40 technologies across 16 categories
CDN
Cloudflare
since Oct 2024
Cloudinary
since May 2025
Google Hosted Libraries
since Aug 2022
jQuery CDN
since May 2025
CMS
Databases
MySQL
since Oct 2024
Documentation
Zendesk
since Aug 2022
Ecommerce
Font scripts
Google Font API
since Oct 2024
Hosting
JavaScript frameworks
Stimulus
since Aug 2022
JavaScript libraries
Miscellaneous
PaaS
Programming languages
PHP
since Oct 2024
Security
Cloudflare Bot Management
since May 2025
HSTS
since Sep 2022
SEO
Tag managers
Google Tag Manager
since Oct 2024
Webmail
Microsoft 365
since Jul 2025
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 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
2.58 / 10 · ranked #2,354,377 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Akamai
- Weight: 3.3 MB · 40 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Upstream Bio
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (141.193.213.10)
- DNS: GoDaddy DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC reject
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 8,030,878, 3 hosts
- Verified with: DocuSign, Google, Jamf, Microsoft 365, Smartsheet
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| investors.upstreambio.com | 18 |
| upstreambio.com | 18 |
| www.upstreambio.com | 16 |