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DNS Tool
Executive's DNS Intelligence Brief
Generated 8 Mar 2026, 14:06 UTC
Duration 25.6s
Version v26.35.20
Integrity 4277d21a660bfbe957f87495e72cf8c39b7635669e8d88bee314f934d148953dc220ca3a3298a490caa530dd32398c587b5c9e191ba2484e522b9749709d5ff8
Subject Domain
nlnetlabs.nl

Executive's DNS Intelligence Brief

Board-level domain security assessment — nlnetlabs.nl

8 Mar 2026, 14:06 UTC · 25.6s · SHA-3-512: 4277✱✱✱✱ Verify ·Archived
Engineer
DNS Security & Trust Posture
Risk Level: Medium Risk
5 protocols configured, 4 not configured
1 recommendation
Analysis Confidence
MODERATE
Resolver agreement is inconsistent for some protocols, limiting confidence. Data currency and system maturity are adequate.
Email Spoofing
Partial
Brand Impersonation
Not Set Up
DNS Tampering
Protected
Certificate Control
Open
What Requires Attention
Recommended Move DMARC policy from 'none' to 'quarantine' or 'reject'
The BIG Questions
Can this domain be impersonated by email? Yes DMARC is monitor-only (p=none)
Can DNS itself be tampered with? No DNSSEC signed and validated, cryptographic chain of trust verified
Can this brand be convincingly faked? Likely DMARC is monitor-only p=none (RFC 7489 §6.3) — spoofed mail is not blocked, brand faking is trivial
Is mail transport encryption enforced? Yes DANE/TLSA provides cryptographic transport verification
Is certificate issuance controlled? No No CAA records — any certificate authority may issue certificates for this domain
Does this domain publish AI agent instructions? No No llms.txt file detected — AI models have no structured instructions for this domain
Is AI crawling of our content controlled? No robots.txt present but does not block AI crawlers — content may be freely scraped
Has someone manipulated AI recommendations about us? No No indicators of AI recommendation manipulation found
Are there hidden AI prompts on our site? No No hidden prompt artifacts found in page source
Domain Overview
Registrar Prolocation B.V. (Registrant: Benno Overeinder)
Email Provider Self-hosted
Web Hosting Unknown
DNS Hosting Unknown

Technical Findings

Email Authentication
Can this domain be impersonated by email? Yes — DMARC is monitor-only (p=none)
SPF (Sender Policy) Configured
DMARC (Policy) Partial Policy: none Monitor Only
DKIM (Signatures) Configured
Mail Posture Moderately Protected
Mail Transport Security
Is mail transport encryption enforced? Yes — DANE/TLSA provides cryptographic transport verification
MTA-STS Partial
DANE / TLSA Active
TLS-RPT (Reporting) Not Configured
Mail Transport Enforced Policy-assessed 2 probes
DNS Security
Can DNS itself be tampered with? No — DNSSEC signed and validated, cryptographic chain of trust verified
DNSSEC Signed & Validated
DNSSEC fully configured and validated — AD (Authenticated Data) flag set by resolver 8.8.8.8 confirming cryptographic chain of trust from root to zone (RFC 4035 §3.2.3)
NS Delegation Healthy Enterprise DNS (Mixed Configuration)
Delegation Consistency 2 Issues
NS Fleet Health Healthy Diversity: Good
DNSSEC Operations 1 Issue 2 keys, 0 sigs
Brand & Certificate Controls
Can this brand be convincingly faked? Likely — DMARC is monitor-only p=none (RFC 7489 §6.3) — spoofed mail is not blocked, brand faking is trivial
Is certificate issuance controlled? No — No CAA records — any certificate authority may issue certificates for this domain
BIMI (Brand Logo) Not Configured
CAA (Certificate) Open Any certificate authority may issue certificates
AI Surface Scanner Scanned
Does this domain publish AI agent instructions? No — No llms.txt file detected — AI models have no structured instructions for this domain
Is AI crawling of our content controlled? No — robots.txt present but does not block AI crawlers — content may be freely scraped
Has someone manipulated AI recommendations about us? No — No indicators of AI recommendation manipulation found
Are there hidden AI prompts on our site? No — No hidden prompt artifacts found in page source
LLM Context File Not Found No llms.txt file detected
AI Crawler Governance Not Blocking No AI crawler restrictions found in robots.txt
Poisoning Indicators None Found No AI recommendation poisoning indicators detected
Hidden Prompt Artifacts None Found No hidden prompt artifacts detected
Public Exposure Clear No secrets detected in publicly accessible source
Priority Actions 4 total Achievable: Low Risk
High Upgrade DMARC from p=none

Your DMARC policy is monitor-only (p=none). Upgrade to p=quarantine or p=reject after reviewing reports to actively prevent spoofing.

Low Add CAA Records

CAA records specify which Certificate Authorities may issue certificates for your domain, reducing the risk of unauthorized certificate issuance.

Low Add TLS-RPT Reporting

Your domain has DNSSEC + DANE — the strongest email transport security available. TLS-RPT (TLS Reporting) sends you reports about TLS connection failures when other servers try to deliver mail to your domain.

Low Deploy MTA-STS

MTA-STS enforces TLS encryption for inbound mail delivery, preventing downgrade attacks on your mail transport.

Appendix — Additional Resources

Full technical details including raw DNS records, DKIM public keys, IP/ASN mappings, resolver consensus evidence, and verification commands are available in the Engineer's DNS Intelligence Report.

View Engineer's DNS Intelligence Report

Verify Report Integrity SHA-3-512 Has this report been tampered with? Verify below

Tamper-evident fingerprint binding this analysis to its data, domain, timestamp, and tool version.

4277d21a660bfbe957f87495e72cf8c39b7635669e8d88bee314f934d148953dc220ca3a3298a490caa530dd32398c587b5c9e191ba2484e522b9749709d5ff8
12 RFCs evaluated · DNS state at 8 Mar 2026, 14:06 UTC
Internet Archive — Permanent Record Wayback Machine

This analysis is permanently archived by the Internet Archive, providing independent third-party verification of DNS security posture at analysis time.

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