What powers 
uu.nl?
Last seen Sep 2026 · 194 technologies across 47 categories
Accessibility
Advertising
Analytics
Authentication
Caching
CDN
CMS
Comment systems
Cookie compliance
Databases
Digital asset management
Documentation
Ecommerce
Font scripts
Hosting
IaaS
Issue trackers
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Live chat
LMS
Maps
Marketing automation
Miscellaneous
Mobile frameworks
Operating systems
PaaS
Page builders
Payment processors
Performance
Photo galleries
Programming languages
Retargeting
Rich text editors
Security
SEO
Tag managers
UI frameworks
Video players
Web frameworks
Web server extensions
Web servers
Webmail
Widgets
WordPress plugins
WordPress themes
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 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
- Sep 2026 gptbot added to robots.txt
- Sep 2026 gptbot removed from robots.txt
- Sep 2026 gptbot added to robots.txt
- Aug 2026 *: Restricted (was Allowed)
- Aug 2026 *: Allowed (was Restricted)
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| holland utrecht university | #1 | 1,600 |
| veterinary netherlands | #2 | 1,100 |
| netherlands | #68 | 630 |
| rense | #9 | 370 |
| science hub | #33 | 280 |
| university of utrecht | #1 | 270 |
| gima | #2 | 260 |
| yoda | #35 | 230 |
| israel in palestine | #42 | 190 |
| utrecht | #15 | 170 |
| gsls | #7 | 170 |
| jason frank | #20 | 160 |
| uvu | #72 | 160 |
| drink water | #80 | 140 |
| bachelor | #63 | 140 |
| linguistics | #89 | 130 |
| theoretical philosophy | #3 | 130 |
| theoretical philosophy | #3 | 130 |
| seismology | #35 | 120 |
| crypto bubble | #22 | 110 |
| vici vidi veni | #97 | 100 |
| vidi veni vici | #96 | 100 |
| doms university | #70 | 100 |
| earth and moon distance | #10 | 100 |
| gerardus t hooft | #3 | 97 |
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
Audience
- 52% desktop
- 46% phone
- 2% tablet
Netherlands
India
Germany
United Kingdom
United States
Italy
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
8.67 / 10 · ranked #1,263 of all domains
9,884 referring domains · OpenPageRank
Search traffic
17,200 est. monthly organic visits (US)
12,463 keywords in Google's top 30
Core Web Vitals
| LCP | 0.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 4.4 MB · 64 requests
- WordPress theme: uu-drift (child: cdh-drift) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Similar sites
inkl.com 4 shared
torial.com 4 shared
naturkartan.se 4 shared
elsaltodiario.com 4 shared
- line.biz 4 shared
dockyard.com 4 shared
imazon.org.br 4 sharedphoenixframework.org 4 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- Utrecht University
- Founded: 1636
- Country: Netherlands
From Wikidata (CC0).
Infrastructure
- Registered Mar 1997 (29 years) via SURF B.V.
- Hosted on Combell (83.217.76.86, IPv6)
- DNS: uu.nl
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record, DNSSEC signed, CAA
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 5,119, 1,859 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| educate-it.uu.nl | 26 |
| parnassos.uu.nl | 26 |
| cdh.uu.nl | 24 |
| manuals.uu.nl | 23 |
| bnaic2024.sites.uu.nl | 22 |
| elearning.ubc.uu.nl | 22 |
| geo-data-support.sites.uu.nl | 22 |
| tauu.uu.nl | 22 |
| ubc.uu.nl | 22 |
| uu-inclusive-teaching-toolbox.sites.uu.nl | 22 |
| up.sites.uu.nl | 21 |
| cat-database.sites.uu.nl | 20 |
| doy-community.sites.uu.nl | 20 |
| fenix.sites.uu.nl | 20 |
| muurformules.sites.uu.nl | 20 |
| nisis.sites.uu.nl | 20 |
| science-communication.sites.uu.nl | 20 |
| teaching-and-learning-collection.sites.uu.nl | 20 |
| teh21.sites.uu.nl | 20 |
| wiskundeinteams.sites.uu.nl | 20 |
| blackboard-support.uu.nl | 19 |
| btevents.uu.nl | 19 |
| elbd.sites.uu.nl | 19 |
| eps.sites.uu.nl | 19 |
Full technology history →
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