What powers filippo.io?
Last seen Jun 2026 · 20 technologies across 13 categories
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| filippo | #7 | 250 |
| syscall number | #1 | 15 |
| filippo valsorda | #1 | 14 |
| linux system calls | #6 | 13 |
| linux system calls table | #2 | 11 |
| syscall table | #2 | 10 |
| linux syscall table | #1 | 10 |
| system call table linux | #3 | 7 |
| test for heartbleed vulnerability | #2 | 5 |
| linux system calls list | #3 | 5 |
| heartbleed vulnerability test | #2 | 5 |
| linux system call list | #4 | 3 |
| list of system calls in linux | #5 | 2 |
| list of linux system calls | #5 | 2 |
| x86 syscall | #7 | 1 |
| brainwallet | #16 | 1 |
| check out branch github | #79 | 1 |
| system call table | #5 | 1 |
| syscall linux | #7 | 1 |
| unix syscalls | #9 | 1 |
| linux write syscall | #8 | 1 |
| linux syscall | #4 | 1 |
| macos syscalls | #6 | 1 |
| 86 x 4 | #50 | 1 |
| dnskey | #14 | 1 |
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.
Audience
- 52% phone
- 48% desktop
India
Germany
United Kingdom
France
Italy
Canada
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.79 / 10 · ranked #10,918 of all domains
1,155 referring domains · OpenPageRank
Search traffic
370 est. monthly organic visits (US)
50 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 0.5 MB · 44 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| blog.filippo.io | 9 |
| www.filippo.io | 9 |
| words.filippo.io | 5 |
| filippo.io | 3 |
Full technology history →
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Recent changes
- dropped jsDelivr Aug 2025
- dropped Open Graph Aug 2025