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2.63.a76559e

DANE / TLSA Checker

Look up TLSA DNS records for DANE (DNS-Based Authentication of Named Entities) across HTTPS, SMTP, and SMTPS services.

Enter a domain to look up DANE / TLSA records

Examples:

Related Tools

DNS Lookup

Query any DNS record type for any domain - A, AAAA, MX, TXT, CNAME, NS, SOA, CAA. Results come from our own neutral resolver.

CAA Record

Check which Certificate Authorities are permitted to issue SSL/TLS certificates for a domain.

DNSSEC Checker

Verify whether a domain has DNSSEC enabled: its DS and DNSKEY records, their signatures, and whether a validating resolver accepts the chain.

About this tool

DANE (DNS-Based Authentication of Named Entities, RFC 6698) uses DNSSEC-signed TLSA records in DNS to pin certificates for a service. Rather than relying solely on certificate authorities, DANE lets domain owners publish the exact certificate or public key hash that a client should accept. TLSA records are queried at _port._tcp.domain (e.g. _443._tcp.example.com). This checker queries HTTPS (443), SMTP (25), SMTPS (465), and submission (587) in parallel.

Where your data goes

Sent to our server: Domain. We look it up in DNS. We connect to it. Part of this work runs on our own server. To answer a repeated check fast, we have to keep answers for 1 hour; then they are deleted. Also added to the page link, so you can share the result: Domain.