What powers spdx.org?
Last seen Aug 2025 · 41 technologies across 24 categories
Analytics
Google Analytics
since Jun 2018
Caching
Varnish
since Jun 2020
CDN
Fastly
since Feb 2021
CMS
Cookie compliance
Osano
since Jul 2022
Databases
Documentation
Zendesk
since May 2024
Mailgun
since Aug 2022
Font Scripts
Font Awesome
since May 2017
Google Font API
since May 2017
Hosting
WordPress Multisite
since Jul 2023
JavaScript graphics
JavaScript libraries
Miscellaneous
PaaS
Pantheon
since Jun 2020
Page builders
wpBakery
since Jul 2021
Programming languages
PHP
since Jun 2018
TypeScript
since May 2024
Rich text editors
RUM
New Relic
since Jun 2020
Security
HSTS
since Sep 2022
UI frameworks
Video players
Web Servers
Widgets
WordPress plugins
TablePress
since Feb 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 68% phone
- 30% desktop
- 2% tablet
United States
India
Germany
Indonesia
Japan
Russia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
8.07 / 10 · ranked #6,200 of all domains
1,487 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on Amazon Web Services (3.165.136.8, IPv6)
- DNS: dnsimple-edge.com
- Email: Forward Email
- Email security: SPF (soft fail), no DMARC record
- SSL: Amazon Trust Services, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 7,840, 7 hosts
- Verified with: Forward Email
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| spdx.org | 23 |
| lists.spdx.org | 17 |
| www.spdx.org | 8 |
| tools.spdx.org | 4 |