What powers 
chadfowler.com?
Last seen Oct 2026 · 7 technologies across 7 categories
Caching
Varnish
since Apr 2026
CDN
Fastly
since Apr 2026
Miscellaneous
Open Graph
since Apr 2026
PaaS
GitHub Pages
since Feb 2020
Video players
YouTube
since Apr 2026
Webmail
Google Workspace
since Mar 2024
Widgets
Spotify Widgets
since Apr 2026
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
5.53 / 10 · ranked #154,789 of all domains
203 referring domains · OpenPageRank
Page
- Language: English
- CDN: Fastly
- Weight: 3.5 MB · 21 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Sep 2000 (26 years) via Network Solutions, LLC, renews Sep 2031
- Hosted on Fastly (185.199.108.153)
- DNS: DNS Made Easy
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 490,031, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Full technology history →
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Recent changes
- dropped Ruby Apr 2026
- dropped Ruby on Rails Apr 2026