What powers 
checkbook.io?
Last seen Sep 2026 · 50 technologies across 22 categories
Analytics
CDN
Documentation
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Live chat
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Reverse proxies
Rich text editors
Security
Static site generator
Tag managers
UI frameworks
Web servers
Webmail
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 *: Restricted (was Allowed)
- Sep 2026 *: Allowed (was Restricted)
- Sep 2026 applebot removed from robots.txt
- Aug 2026 applebot added to robots.txt
- Aug 2026 applebot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 64% desktop
- 35% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.53 / 10 · ranked #396,893 of all domains
72 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Amazon CloudFront
- Weight: 1.3 MB · 57 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Amazon Web Services (99.84.237.85)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (neutral), DMARC reject
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 1,899,669, 10 hosts
- Verified with: Apple Business, Citrix, Google, Meta Business, OpenAI, Slack, Sophos
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| app.checkbook.io | 34 |
| checkbook.io | 21 |
| www.checkbook.io | 21 |
| demo.checkbook.io | 19 |
| docs.checkbook.io | 17 |
| faq.checkbook.io | 17 |
| status.checkbook.io | 9 |
| support.checkbook.io | 7 |
Full technology history →
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Recent changes
- dropped AOS Jul 2026
- dropped Gatsby Jul 2026
- dropped Microsoft Advertising Jul 2026
- detected Astro May 2026
- detected Google Font API May 2026