Available Reports
Last Update
February, 2026
Scan & Monitor
Security Profile
- Live site
- Secure connection (HTTPS)
- Certificate valid
- No outdated techologies detected
Address
Postbus 5022, Arnhem, 6802 EA, NL
sidn.nl
website information and technology stackNote: This page displays technologies detected on sidn.nl subdomain only.
To view technologies identified across all subdomains of the sidn.nl domain,
please refer to the Aggregated View.
| Web technologies detected on this domain | 34 technologies |
| Web technologies detected across all sidn.nl subdomains | 63 technologies |
| Website rank | 3,225 |
| Website Location |  Netherlands |
| Language | Dutch (Nederlands) |
| Domain Forwarding | 15websites redirects to sidn.nl |
| Last technology update | December, 2025 |
| Total sidn.nl subdomain count | 11 subdomains |
| Top ranking subdomain | |
| IP Address | 34.111.90.63 |
| Reverse IP | 4 websites share 34.111.90.63 IP address. |
| Autonomous System Number (ASN) | AS16550 (GOOGLE-PRIVATE-CLOUD) |
| Total linking domains | 16 domains |
| Total linking IP | 13 IPs |
| Certificate Issuer | Hellenic Academic and Research Institutions CA |
Technology Stack
A snapshot of the most notable technologies used on the sidn.nl website. This is a partial list only. Click below to view the full technology stack with complete details.| Technology Type | Technology | First detected | Last detected |
|---|---|---|---|
| Email Authentication | | September, 2025 | February, 2026 |
| Headless CMS |  Contentful | September, 2025 | February, 2026 |
| Infrastructure as a Service |  AWS | September, 2025 | February, 2026 |
| Team Collaboration |  Google Workspace | September, 2025 | February, 2026 |
| Web Mail |  Apple iCloud Mail | September, 2025 | February, 2026 |
| Web Servers |  OpenResty | September, 2025 | February, 2026 |
Change History
List of recent detected changes in the technological composition of the sidn.nl domain| Technology | Technology Type | Version | Change | Date |
|---|---|---|---|---|
 DoubleClick Floodlight | Advertising Networks | Dropped | Dec, 2025 | |
 Google Ads | Advertising Networks | Dropped | Dec, 2025 | |
 Google AdSense | Advertising Networks | Dropped | Dec, 2025 | |
 Google Analytics | Analytics | Dropped | Dec, 2025 | |
 Google Tag Manager | Tag Managers | Dropped | Dec, 2025 | |
 Squarespace | Content Management System | Dropped | Dec, 2025 |
Uncommon response headers
List of uncommon response headers that were used by the website.| Header | Value |
|---|---|
| Access-Control-Max-Age | 86400 |
| Cross-Origin-Embedder-Policy-Report-Only | unsafe-none; report-to="default" |
| Cross-Origin-Opener-Policy-Report-Only | unsafe-none; report-to="default" |
| Nel | {"report_to":"default","max_age":2592000,"include_subdomains":true,"failure_fraction":1.0} |
| Permissions-Policy | camera=(), microphone=(); report-to=default |
| Referrer-Policy | strict-origin-when-cross-origin |
| Report-To | {"group":"default","max_age":10886400,"endpoints":[{"url":"https://sidn-nl.uriports.com/reports"}],"include_subdomains":true} |
| Reporting-Endpoints | default="https://sidn-nl.uriports.com/reports" |
| Server | openresty |
| Via | 1.1 google |
| X-Amz-Cf-Id | o0DEMLaVbQUp4v71UZXFtVOwKo41ljmGctgtgCIawNKQ_2PGW4mimA== |
| X-Amz-Cf-Pop | CDG50-P2 |
| x-amz-replication-status | REPLICA |
| x-amz-server-side-encryption | AES256 |
| x-amz-version-id | cgUBOE6tpbySrErszXBeu6SyZqBEPaaV |
| X-Cache | Hit from cloudfront |
| x-cloud-trace-context | 2794b6cfd583272cdd704471af177fc3 |
| x-dns-prefetch-control | off |
| X-Download-Options | noopen |
| X-Goog-IAP-Generated-Response | true |
| X-Permitted-Cross-Domain-Policies | none |