What powers sron.nl?
Last seen Jun 2026 · 37 technologies across 20 categories
Accessibility
Analytics
Caching
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CMS
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| how are black holes formed | #40 | 13 |
| sron | #8 | 12 |
| how do black holes form | #41 | 6 |
| why earth is special | #7 | 4 |
| why is earth a special planet | #7 | 4 |
| why is the earth special | #8 | 3 |
| wasp-107b cotton candy planet | #7 | 2 |
| xmm-newton telescope | #9 | 1 |
| xmm-newton | #23 | 1 |
| xmm newton telescope | #9 | 1 |
| universe connected | #13 | 1 |
| what is special about earth | #10 | 1 |
| space and cosmos | #29 | 1 |
| space tango | #28 | 1 |
| space research | #61 | 1 |
| sron | #94 | 1 |
| sron | #78 | 1 |
| sron | #64 | 1 |
| sron | #54 | 1 |
| sron | #42 | 1 |
| nasa sdo | #69 | 1 |
| methane plume | #7 | 1 |
| herschel space | #37 | 1 |
| why are black holes formed | #38 | 0 |
| why is earth the perfect planet for life | #57 | 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.
Audience
- 73% desktop
- 27% phone
Netherlands
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.93 / 10 · ranked #49,232 of all domains
378 referring domains · OpenPageRank
Search traffic
60 est. monthly organic visits (US)
70 keywords in Google's top 30
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 5.1 MB · 55 requests
- WordPress theme: sron · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.sron.nl | 19 |
| earth.sron.nl | 18 |
| owncloud2.sron.nl | 15 |
| personal.sron.nl | 2 |
Full technology history →
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Recent changes
- dropped Redis Jan 2026
- dropped Redis Object Cache Jan 2026
- detected Yoast SEO Premium Jan 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- detected W3 Total Cache Dec 2025
- detected Complianz Sep 2025