What powers go-cal.org?
Last seen Aug 2026 · 38 technologies across 19 categories
Analytics
CDN
CMS
Cookie compliance
Databases
Ecommerce
Font scripts
Issue trackers
JavaScript libraries
Maps
Miscellaneous
Page builders
Performance
Programming languages
Tag managers
UI frameworks
Video players
Webmail
WordPress plugins
AI Crawlers
Blocks 8 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
The other 25 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
AI Crawlers
8 of 33 AI crawlers blocked
Standards: Content Signals
Audience
- 69% phone
- 31% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.52 / 10 · ranked #868,379 of all domains
27 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 7.7 MB · 131 requests
- WordPress theme: gocal_2025 · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.57.158, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 7,056,240, 2 hosts
- Verified with: Brevo
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| go-cal.org | 29 |
| experience.go-cal.org | 16 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Complianz Jun 2026
- detected lit-html Jun 2026
- detected Osano Jun 2026
- detected Facebook Pixel Feb 2026
- detected Cloudflare Browser Insights Nov 2025
- dropped Redis Nov 2025
- dropped Redis Object Cache Nov 2025
- dropped Nginx Oct 2025