What powers 
functional.cafe?
Last seen Sep 2026 · 8 technologies across 7 categories
CDN
JavaScript frameworks
JavaScript libraries
Message boards
Miscellaneous
Security
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- GPTBot Blocked
The other 32 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| racket lang | #17 | 3 |
| mastodon coffee | #15 | 0 |
| rhombus language | #22 | 0 |
| racketcon | #23 | 0 |
| café elias | #47 | 0 |
| racket ide | #58 | 0 |
| synth x branch | #59 | 0 |
| hard math cafe | #81 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
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
1 of 33 AI crawlers blocked
Open Page Rank
5.56 / 10 · ranked #151,489 of all domains
191 referring domains · OpenPageRank
Search traffic
3 est. monthly organic visits (US)
8 keywords in Google's top 30
Infrastructure
- Registered Apr 2017 (9 years) via TLD Registrar Solutions Ltd., renews Apr 2027
- Hosted on CDN77 (156.146.43.71, IPv6)
- DNS: bunny.net
- Email: no MX record returned
- Email security: SPF (neutral), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 1,149,802, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Full technology history →
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Recent changes
- dropped Mailgun Mar 2026
- dropped Ruby Mar 2026
- dropped Ruby on Rails Mar 2026
- dropped Cloudflare Jan 2026
- dropped HTTP/3 Jan 2026
- dropped Webpack Jan 2026