What powers trekhleb.dev?
Last seen Sep 2026 · 11 technologies across 8 categories
Analytics
Google Analytics
since May 2021
Caching
Varnish
since May 2021
CDN
Fastly
since May 2021
JavaScript frameworks
Miscellaneous
PaaS
GitHub Pages
since May 2021
Security
HSTS
since Nov 2022
UI frameworks
Tailwind CSS
since Apr 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 66% desktop
- 34% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.31 / 10 · ranked #1,117,581 of all domains
48 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- CDN: Fastly
- Weight: 0.4 MB · 21 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Google Cloud DNS
- Email: no MX record returned
- Email security: DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 548,903
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted