TechUtilityTools

Technical Standards

The standards we build against

By TechUtilityTools Editorial Team
MethodologyTransparencyEditorial standards

Every diagnostic on TechUtilityTools is implemented against published, peer-reviewed internet standards. This page enumerates the protocols and RFCs we follow, so technical readers can verify our implementations against authoritative sources.

DNS

  • RFC 1034 / 1035 — DNS concepts and message format
  • RFC 8484 — DNS over HTTPS (DoH), used by our DNS lookup tools
  • RFC 7858 — DNS over TLS
  • RFC 6891 — EDNS(0) extension mechanisms

HTTP & TLS

  • RFC 9110 / 9111 / 9112 — HTTP semantics, caching, HTTP/1.1
  • RFC 9113 — HTTP/2
  • RFC 9114 — HTTP/3
  • RFC 8446 — TLS 1.3 (basis for our SSL/TLS analyzers)
  • RFC 5280 — X.509 certificate validation

Networking & diagnostics

  • RFC 791 / 8200 — IPv4 and IPv6
  • RFC 793 / 9293 — TCP
  • RFC 768 — UDP
  • RFC 792 — ICMP (referenced where browser-based approximations apply)
  • RFC 1812 — Requirements for IPv4 routers

Security & reputation

  • OWASP Top 10 — web application security guidance
  • Mozilla Observatory grading concepts — security header best practices
  • Public blocklist sources documented in our Data Sources

Measurement & accuracy

Our implementation choices, sample counts, aggregation strategies, and accuracy limits are documented in detail on the Methodology Center. The standards above describe what we measure against; the methodology describes how we measure.