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Tool Library

Investigation Tools for Every Layer

Start with high-signal checks first, then drill into deep record diagnostics as needed.

Popular

TLS Certificate and Cipher Analysis

Analyze certificates and cipher suites for robust TLS.

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MX Records Lookup and Verification

Check MX records for correct mail routing.

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MTA-STS Policy Validator

Validate policy file, DNS, and TLS for secure transport.

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SPF Record Checker and Validator

Inspect SPF records to prevent spoofing.

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DMARC Record Lookup

Parse DMARC policies and reporting.

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DNSSEC Chain of Trust

Check the chain from child to parent to root, and see where it fails.

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What is My IP Address

Display your public IP and reverse DNS.

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Domain to IP Address Resolution

Resolve a domain to its IP addresses.

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SMTP Capability Probe

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Scan SMTP servers for TLS and features.

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All Tools

CAA Record Lookup

View allowed certificate authorities and reporting URIs.

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SRV Record Lookup

Discover service endpoints and ports.

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CNAME Record Lookup

Resolve canonical names and pivot to other records.

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Authoritative DNS Server Lookup

Find authoritative name servers for a domain.

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SOA Record Lookup

View zone authority and timers for a domain.

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BIMI Record Verification Tool

Verify BIMI records and logos for mailbox trust.

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DKIM Record Checker and Validator

Check DKIM selectors and public keys.

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DNS Configuration Validator

Audit DNS settings for consistency.

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DS Record Lookup

Retrieve Delegation Signer records with key tags and digests.

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DNSKEY Record Lookup

Inspect DNSKEY flags, algorithms, key tags, and key sizes.

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RRSIG Record Lookup

Review DNSSEC signature windows and covering record sets.

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NSEC Record Lookup

Trace NSEC next-domain links and advertised RR types.

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NSEC3PARAM Lookup

See NSEC3 hashing algorithms, iterations, and salts.

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Reverse DNS (PTR) Record Lookup

Resolve IP addresses back to hostnames.

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ASN Lookup and Information

Retrieve ASNs and organizations for IPs.

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ASN to IP Range Lookup

List IP ranges owned by an ASN.

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Domain Whois Information Lookup

Fetch registration details for domains.

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IP Address Geolocation

Map an IP address to its country.

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DNS Blacklist (DNSBL) Lookup

Check if an IP appears on DNS blacklists.

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AAAA Record Lookup

Resolve IPv6 addresses for a domain.

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