DNS & Email Security Tools
Enter a domain or IP address for instant DNS and email security analysis
Email Security Tools
MX Lookup
Discover mail servers and verify priority rankings
SPF Check
Validate SPF records and authorized senders
DKIM Check
Verify DKIM signatures and key configuration
DMARC Check
Validate DMARC policies and alignment
Email Health
Combined MX, SPF, DKIM, DMARC audit with score
Header Analyzer
Parse email headers and trace delivery path
ARC Checker
Validate Authenticated Received Chain for forwarded emails
SMTP Test
Test SMTP connectivity, TLS, and authentication
BIMI Check
Validate brand logo indicators for email clients
MTA-STS Check
Verify mail transport security and TLS enforcement
TLS-RPT Analyzer
Check TLS reporting records and analyze delivery reports
DNS & Security Tools
DNS Lookup
Query all record types: A, AAAA, CNAME, TXT, NS, SOA, PTR, SRV, CAA
SSL/TLS Check
Validate SSL certificates, protocols, and security configuration
HTTP Headers
Analyze security headers: HSTS, CSP, X-Frame-Options, and more
DNSSEC Check
Verify DNSSEC configuration and chain of trust
Blacklist Check
Query 25+ RBLs to check if IP is blacklisted
DANE/TLSA Check
Verify DANE TLSA records for certificate pinning
CAA Lookup
Check Certificate Authority Authorization records
CT Log Search (Coming Soon)
Search Certificate Transparency logs — links to crt.sh and Google CT in the meantime
Record Generators
SPF Generator
Create SPF records with authorized mail servers
DKIM Generator
Generate DKIM DNS records from your public key
DMARC Generator
Generate DMARC records with custom policy settings
CAA Generator
Create CAA records to control certificate issuance
MTA-STS Generator
Create MTA-STS policy for email transport security
TLS-RPT Generator
Create TLS reporting record for delivery reports
Privacy First: Queries run on stateless servers — nothing is logged or stored, and results are discarded as soon as they reach your browser. CAA, MTA-STS, and TLS-RPT generators run entirely client-side.