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Executive's DNS Intelligence Brief

Board-level domain security assessment — www.mercadopago.com

17 Feb 2026, 23:10 UTC · 22.6s · SHA-3-512: ff77✱✱✱✱ Verify
DNS Security & Trust Posture
Risk Level: Medium Risk
5 protocols configured, 4 not configured
1 recommendation
Email Spoofing
Vulnerable
Brand Impersonation
Not Set Up
DNS Tampering
Protected
Certificate Control
Configured
What Requires Attention
Recommended Enable DMARC aggregate reporting (rua) for authentication visibility
The BIG Questions
Can this domain be impersonated by email? Uncertain incomplete configuration
Can DNS itself be tampered with? No DNSSEC signed and validated, cryptographic chain of trust verified
Can this brand be convincingly faked? Partially DMARC policy is not set to reject — partial protection only
Is mail transport encryption enforced? No No MTA-STS or DANE — mail transport encryption is opportunistic only
Is certificate issuance controlled? Yes CAA records restrict which certificate authorities may issue certificates
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 No robots.txt found — AI crawlers have unrestricted access
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 Unknown
Web Hosting Unknown
DNS Hosting Unknown

Technical Findings

Email Authentication
Can this domain be impersonated by email? Uncertain — incomplete configuration
SPF (Sender Policy) Partial
DMARC (Policy) Partial
DKIM (Signatures) Not Detected
Mail Posture Moderately Protected
Mail Transport Security
Is mail transport encryption enforced? No — No MTA-STS or DANE — mail transport encryption is opportunistic only
MTA-STS Partial
DANE / TLSA Hosted Provider No DANE/TLSA records found (checked 1 MX host)
TLS-RPT (Reporting) Not Configured
Mail Transport Not Enforced Policy-assessed
DNS Security
Can DNS itself be tampered with? No — DNSSEC signed and validated, cryptographic chain of trust verified
DNSSEC Signed & Validated
DNSSEC configured (DNSKEY + DS records present) but AD flag not set — resolver did not confirm chain of trust validation (RFC 4035 §3.2.3). This may indicate a broken chain or a non-validating resolver path.
NS Delegation Issues Detected
Brand & Certificate Controls
Can this brand be convincingly faked? Partially — DMARC policy is not set to reject — partial protection only
Is certificate issuance controlled? Yes — CAA records restrict which certificate authorities may issue certificates
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 — No robots.txt found — AI crawlers have unrestricted access
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 No 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 3 total Achievable: Secure
Medium Add DMARC Aggregate Reporting

Add a rua= tag to receive aggregate DMARC reports. Without reporting, you cannot monitor authentication failures.

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.

ff77a919a6dc494011f30a9704d10bed9599acceedeabf3d1d905ce60d8525e2775b5ef8b7d451ddbb41429e7b526a0897ddb9f1782d004d8f1ae32cc33548cf
12 RFCs evaluated · DNS state at 17 Feb 2026, 23:10 UTC