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Terms of Use

Last updated: 2026-08-17

By using The DNS Tools (thednstools.com) you agree to these terms. They are intentionally short and plain.

The service

The DNS Tools provides free, browser-based file tools. The tools are provided "as is", without warranties of any kind, express or implied.

Your responsibility

You are responsible for the files you process and for having the right to process them. Do not use the tools to create, alter, or distribute unlawful material, or to infringe anyone's rights.

No warranty and limitation of liability

Automated processing can occasionally produce imperfect results. Always review output before relying on it, and keep your own backup of important files. To the extent permitted by law, we are not liable for any loss or damage arising from use of the tools, including data loss.

Your files and our software

Your files remain yours — we claim no rights over them and, for browser-based tools, never receive them. The website, its design, and its code remain the property of the operator and may not be copied wholesale.

Availability and changes

We may add, change, or remove tools and features at any time, and may update these terms. Continued use after a change means you accept the updated terms. The "Last updated" date above reflects the current version.

DNS Records13

  • DNS Lookup
  • A Record Lookup
  • AAAA Record Lookup
  • MX Record Lookup
  • TXT Record Lookup

IP & Network5

  • What Is My IP Address
  • Reverse DNS (PTR) Lookup
  • DNS Blacklist (DNSBL) Check
  • Domain Whois (RDAP) Lookup
  • ASN & IP Routing Lookup

Email & Deliverability3

  • SPF Record Checker
  • DMARC Record Checker
  • DKIM Record Checker

SSL & Certificates10

  • SSL Certificate Decoder
  • CSR Decoder
  • PEM to DER Converter
  • DER to PEM Converter
  • PFX to PEM Converter
The DNS Tools

DNS, email, and network diagnostics — no sign-up, nothing stored.

Every lookup runs from your browser against public DNS-over-HTTPS resolvers. Nothing you check is stored, and no query is sent to this site.

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  • All tools
  • DNS Lookup
  • SPF Checker

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© 2026 The DNS Tools. All processing happens in your browser.