What powers siel.nl?
Last seen Aug 2026 · 8 technologies across 7 categories
Ecommerce
Cart Functionality
since Feb 2022
Font scripts
Font Awesome
since Jan 2019
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Programming languages
PHP
since May 2022
Security
HSTS
since Sep 2022
Web servers
Apache HTTP Server
since Jan 2019
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.72 / 10 · ranked #296,479 of all domains
40 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 25 ms |
| CLS | 0 |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on A2B (31.134.204.79, IPv6)
- Email: primerelay.net
- Email security: no SPF record, no DMARC record, DNSSEC signed, CAA
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 472,832, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.siel.nl | 6 |
| pay.siel.nl | 5 |