What powers gcalusa.com?
Last seen Oct 2026 · 23 technologies across 13 categories
Advertising
Microsoft Advertising
since Dec 2022
Simpli.fi
since Dec 2022
Analytics
Google Analytics
since Feb 2020
CDN
Google Hosted Libraries
since Feb 2022
Font scripts
Font Awesome
since Feb 2020
Google Font API
since Feb 2020
JavaScript libraries
Highlight.js
since Jun 2023
Isotope
since Jun 2023
Lightbox
since Jun 2023
OWL Carousel
since Feb 2020
Maps
Google Maps
since Jul 2021
Marketing automation
HubSpot
since Sep 2024
Operating systems
Ubuntu
since Feb 2020
Programming languages
PHP
since Sep 2021
UI frameworks
Video players
YouTube
since Feb 2020
Web servers
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 59% desktop
- 42% phone
United States
India
Singapore
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.44 / 10 · ranked #955,589 of all domains
51 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 6.6 MB · 185 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.26.10.183, IPv6)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 12,534,746, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Cloudflare Aug 2026
- dropped Cloudflare Bot Management Aug 2026
- detected Cloudflare Jun 2026
- detected Cloudflare Bot Management Jun 2026