What powers 
castleisland.vc?
Last seen Aug 2026 · 41 technologies across 22 categories
Analytics
Google Analytics
since Sep 2020
Snowplow Analytics
since Jul 2021
CDN
Cloudflare
since Oct 2024
jQuery CDN
since Apr 2022
CMS
WordPress
since Oct 2024
Customer data platform
Segment
since Feb 2025
Databases
MySQL
since Oct 2024
Ecommerce
Cart Functionality
since Sep 2020
Google Workspace
since Aug 2022
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Marketing automation
MailChimp
since Sep 2020
Miscellaneous
DocuSign
since Oct 2024
HTTP/3
since Mar 2023
Open Graph
since Sep 2022
RSS
since Oct 2024
Webpack
since Feb 2025
PaaS
WP Engine
since Oct 2024
Page builders
Programming languages
Security
HSTS
since Sep 2022
UI frameworks
Bootstrap
since Sep 2020
Web servers
Nginx
since Feb 2025
Webmail
Apple iCloud Mail
since Oct 2024
WordPress plugins
WordPress themes
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
- Sep 2026 * removed from robots.txt
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
5.48 / 10 · ranked #161,179 of all domains
165 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on Cloudflare (141.193.213.10)
- Email: emailsecurity.app
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 1,202,771, 3 hosts
- Verified with: Apple Business, DocuSign, Google, Microsoft 365, Notion, OpenAI
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| castleisland.vc | 22 |
| jobs.castleisland.vc | 15 |
| www.castleisland.vc | 14 |