What powers 
theideasletter.org?
Last seen Sep 2026 · 18 technologies across 12 categories
Advertising
Analytics
CDN
CMS
Cookie compliance
Databases
Marketing automation
Miscellaneous
PaaS
Programming languages
Security
Tag managers
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
AI Crawlers
No AI crawlers blocked
Audience
- 51% phone
- 46% desktop
- 3% tablet
United States
Italy
Germany
Canada
Brazil
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.20 / 10 · ranked #456,527 of all domains
138 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 2.5 MB · 55 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- The Ideas Letter
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (141.193.213.10)
- DNS: markmonitor.com
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 484,377, 2 hosts
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 core-js Sep 2026
- dropped Google Analytics Sep 2026
- detected core-js May 2026
- detected Google Analytics May 2026
- dropped core-js Apr 2026
- dropped Google Analytics Apr 2026
- detected core-js Feb 2026
- detected Google Analytics Feb 2026