What powers vdh-leerdam.nl?
Last seen Jul 2026 · 31 technologies across 16 categories
CDN
Google Hosted Libraries
since Nov 2022
CMS
WordPress
since Aug 2022
Databases
MySQL
since Aug 2022
Ecommerce
Cart Functionality
since Aug 2022
Font scripts
Google Font API
since Nov 2022
JavaScript frameworks
JavaScript libraries
OWL Carousel
since Aug 2022
Marketing automation
MailChimp
since Aug 2022
Miscellaneous
Performance
Priority Hints
since Nov 2023
Programming languages
PHP
since Aug 2022
Security
reCAPTCHA
since Aug 2022
Video players
Web servers
Nginx
since Aug 2022
Widgets
WordPress plugins
AI Crawlers
Blocks 25 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- PanguBot Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- Applebot Blocked
- DuckAssistBot Blocked
- OAI-SearchBot Blocked
- PerplexityBot Blocked
- PetalBot Blocked
- YouBot Blocked
User-request fetchers
- ChatGPT-User Blocked
- meta-externalfetcher Blocked
The other 8 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
AI Crawlers
25 of 33 AI crawlers blocked
Open Page Rank
1.62 / 10 · ranked #5,561,451 of all domains
6 referring domains · OpenPageRank
Infrastructure
- Hosted on HOSTNET (37.128.148.100)
- DNS: sectigoweb.com
- Email: Barracuda
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 60,791,324
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted