Web Tools

From Actionable Screenshots to Resolution and Management-Ready Post-Mortem Reviews
Tools and research for digital trust, internet governance, and authoritative data structures.

  1. Sharing Cloud & Hosting Knowledge (since November 3, 2018) — webhostingtech.nl
  2. Domain Relationships, WHOIS & DNSSEC Analysis (since August 15, 2021) — relationships.hostingtool.nl/domain
  3. Testing Email Receipt from a False Sender (PHP/SMTP, since June 25, 2022) — not publicly available
  4. Web Control (Ubuntu, Docker, Django, Python, PostgreSQL, since November 30, 2024) — control.hostingtool.org
  5. Homepage Route Overview (PHP/Python, since February 26, 2025) — www.workingornot.org
  6. Security Header Overview (PHP/Python, since March 18, 2025) — securityheaders.hostingtool.org
  7. Web Hosting Lookup (PHP/Python, since May 6, 2025) — lookup.hostingtool.org
  8. Registry Table Definition Design (PostgreSQL, since May 16, 2025) — github.com/janwillemstegink/relationships.hostingtool.nl
  9. Top-Level Domain Relationships (PHP/JSON, since June 21, 2025) — relationships.hostingtool.nl/tld
  10. Inbound Mail Flow Analysis (PHP/Python, since March 2, 2026) — analyzemx.hostingtool.org
  11. Post-Quantum Cryptography for TLS (PHP/Python, since March 2, 2026) — analyzetls.hostingtool.org
  12. State of EU Top-Level Domains (since June 5, 2026) — analyzetlds.hostingtool.org
  13. Preparing Trade Registers for Modern PKI and E-Wallets (since June 11, 2026) — analyzesubject.hostingtool.org
  14. Making RDAP Self-Explanatory (since June 18, 2026) — janwillemstegink.nl/self-explanatory-rdap
  15. Browser and Mail Client Readiness (since July 6, 2026) — clientreadiness.hostingtool.org
  16. Multifold History (Ubuntu, Docker, Django, Python, PostgreSQL, since September 8, 2026) — multifold.hostingtool.org

The Dutch website internet.nl (en.internet.nl), a Django-based application, provides valuable action points for responsible parties based on automated test results. However, several structural and conceptual aspects deserve closer attention. One such aspect is Multifold testing: keeping technically distinct service paths separate throughout testing, storage, and presentation, rather than collapsing them into a single aggregate result.

  1. Score weighting limitations — Because internet.nl covers a broad range of test topics, a serious issue may result in only a small score deduction within an otherwise high overall percentage. In practice, this can obscure real problems behind near-perfect scores.
  2. Inaccessible services can still score well — Web or mail services that are closed or unreachable can still achieve scores of approximately 61% (web) or 70% (email) based solely on DNS configuration, despite the service itself being unusable.
  3. Time-outs should count as hard failures — Time-outs are often treated as temporary conditions. From a user perspective, however, a time-out means the service is unreachable. In that sense, a time-out is as critical as missing HTTPS or broken redirects and should be handled as a hard failure.
  4. Domain holder name checks are complex — Verifying domain registration holder names depends heavily on country-specific rules. While most technical components exist, meaningful progress also requires regulatory and political alignment, not just technical solutions.
  5. “Hall of Fame” may need rethinking — The current Hall of Fame concept works well today, but may require more future-proof criteria, such as ownership or control validation through email-based identification.
  6. Email scores can be misleading — Email delivery and reception depend on many external factors. A 100% email score may suggest completeness, while real-world behavior can still differ significantly.
  7. Public display of (sub)domains — Publishing 100% test results for (sub)domains can lead to unwanted or unsolicited contact. For this reason, public display of such results should be carefully reconsidered.
  8. Multifold results — My move towards a management-oriented presentation of Internet.nl measurements, with action points across IPv4, IPv6, www and non-www. — Multifold Control

Note: These observations focus on structural and conceptual aspects rather than engineering details.