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DNS Tool
Executive's DNS Intelligence Brief
Generated 14 Feb 2026, 21:36 UTC
Duration 8.2s
Version v26.14.19
Integrity 88639fb3edb99031caa5640b9426d254fa2367fef1e06ad41976f691965aeded5c0e6799d6f3a097832ad9885429ad9e9a453b1b2d4cebcf6a4377a3a94c4664
Subject Domain
github.com

Executive's DNS Intelligence Brief

Board-level domain security assessment — github.com

14 Feb 2026, 21:36 UTC · 8.2s · SHA-3-512: 8863✱✱✱✱ Verify
Engineer
DNS Security & Trust Posture
Risk Level: Low Risk
4 protocols configured, 5 not configured
Email Spoofing
Protected
Brand Impersonation
Not Set Up
DNS Tampering
Enterprise
Certificate Control
Configured
What Requires Attention
No urgent actions detected. Domain security posture is well-maintained.
The BIG Questions
Can this domain be impersonated by email? No SPF and DMARC reject policy enforced
Can DNS itself be tampered with? Possible
Can this brand be convincingly faked? No
Is mail transport encryption enforced? Not Assessed
Is certificate issuance controlled? Yes
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 MarkMonitor Inc.
Email Provider Google Workspace
Web Hosting Unknown
DNS Hosting NS1

Technical Findings

Email Authentication
Can this domain be impersonated by email? No — SPF and DMARC reject policy enforced
SPF (Sender Policy) Configured
DMARC (Policy) Configured Policy: reject
DKIM (Signatures) Configured
Mail Posture Strongly Protected
Mail Transport Security
MTA-STS Partial
DANE / TLSA Hosted Provider DANE not available — Google Workspace does not support inbound DANE/TLSA on its MX infrastructure
TLS-RPT (Reporting) Not Configured
Mail Transport Opportunistic Policy-assessed
DNS Security
Can DNS itself be tampered with? Possible
DNSSEC Partial
DNSSEC not configured - DNS responses are unsigned
NS Delegation Healthy
Brand & Certificate Controls
Can this brand be convincingly faked? No
Is certificate issuance controlled? Yes
BIMI (Brand Logo) Not Configured
CAA (Certificate) Configured
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
Priority Actions 4 total Achievable: Secure
Medium Enable DNSSEC

DNSSEC is not enabled for this domain. DNSSEC provides cryptographic authentication of DNS responses, preventing cache poisoning and DNS spoofing attacks.

Low Add BIMI Record

Your domain has DMARC reject — you qualify for BIMI, which displays your brand logo in supporting email clients.

Low Add TLS-RPT Reporting

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.

88639fb3edb99031caa5640b9426d254fa2367fef1e06ad41976f691965aeded5c0e6799d6f3a097832ad9885429ad9e9a453b1b2d4cebcf6a4377a3a94c4664
12 RFCs evaluated · DNS state at 14 Feb 2026, 21:36 UTC