Test DNS Security & Configuration

Analyze SOA, SPF, DMARC, DNSSEC, Zone Transfers & More

​The DNSCheck tool on binsec.tools is a free, web-based utility designed to test the DNS configuration and security configuration of a domain. It performs a series of checks to identify potential vulnerabilities and misconfigurations.

  • SOA Record Validation: Ensures that all authoritative name servers are synchronized by checking the Start of Authority (SOA) records.

  • Zone Transfer (AXFR) Test: Detects if DNS zone transfers are improperly configured, which could allow unauthorized access to the entire DNS zone data.

  • DMARC Record Verification: Checks for the presence and correctness of the Domain-based Message Authentication, Reporting, and Conformance (DMARC) record, which helps prevent email spoofing.

  • SPF Record Verification: Validates the Sender Policy Framework (SPF) record to ensure that only authorized mail servers can send emails on behalf of the domain.​

  • DDNSSEC Signature Verification: Verifies the implementation of DNS Security Extensions (DNSSEC), which protect against DNS spoofing and cache poisoning attacks.

Go to DNSCheck

Pentesting
Tools

On binsec.tools, you’ll find free online tools for penetration testing – the same ones used by the binsec group in real-world pentests. The publicly available tools are primarily designed to gather information and enrich it with additional data. Check them out!

Free

No Ads

No user tracking

Pentesting
Tools

On binsec.tools, you’ll find free online tools for penetration testing – the same ones used by the binsec group in real-world pentests. The publicly available tools are primarily designed to gather information and enrich it with additional data. Check them out!

Free

No Ads

No user tracking

Company

binsec GmbH
Solmsstraße 41
60486 Frankfurt am Main
Germany

Legal notice

Director: Patrick Sauer
Authorised Officer: Florian Zavatzki, Dominik Sauer
Registration: Frankfurt am Main, HRB97277
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© 2025 All rights reserved by binsec GmbH.

© 2025 All rights reserved by binsec GmbH.