About NetQuery
Investigate public Internet infrastructure with less friction.
NetQuery is a network and Internet infrastructure investigation workspace for DNS, DNSSEC, email authentication, SMTP, TLS, IP, and Microsoft 365 diagnostics. It connects related checks so you can move from a question to useful technical evidence without rebuilding context across disconnected tools.
Why it exists
One investigation should not require ten different tabs
Troubleshooting public infrastructure is fragmented. Operators routinely move between command-line utilities, vendor portals, single-purpose websites, and documentation just to answer one question.
NetQuery makes that work faster and more coherent. Its tools are designed to connect: a DNS result can lead naturally to the mail, address, policy, or transport check that should come next.
A connected workspace
- DNS and DNSSEC
- Email authentication
- SMTP
- TLS and certificates
- MTA-STS and TLS-RPT
- IP and network information
Query-oriented by design
Ask for the check you need
NetQuery uses compact commands as a direct path into an investigation. The syntax keeps common checks quick to enter and easy to share, while dedicated views provide the detail needed to continue the work.
Example queries
mx:example.comdmarc:example.comcert:example.comAvailable today
Investigation where the work happens
Use NetQuery directly at netquery.tools, or bring its diagnostics into Microsoft Teams, Outlook, and Microsoft 365 Copilot. The Microsoft 365 app keeps technical investigation close to the conversation and the people resolving the issue.
Where NetQuery is going
Investigate now. Know when it changes.
NetQuery is moving beyond one-time lookups toward helping teams understand the ongoing state of their public Internet footprint. Monitoring and history capabilities are being built to preserve useful context and surface meaningful changes over time.
Public technical documentation
Follow the investigation, not just the individual lookup
NetQuery publishes practical troubleshooting workflows, command examples, Microsoft 365 guidance, and product resources in its official public GitHub repository. The documentation is designed to explain how DNS, mail routing, authentication, transport security, and network identity fit together during a real investigation.
The public repository is documentation and product resources, not the production NetQuery application source code.
Scope and trust
Built around public infrastructure evidence
NetQuery operates against public DNS and Internet-facing services. Private DNS zones and internal-only hosts are not queried.
NetQuery is built by NetQuery, LLC. Public documentation, security-reporting guidance, privacy terms, and support information are available so operators can evaluate how the product fits into their workflow.
Official resources
Start with the question in front of you
Run a focused lookup, follow the evidence, and keep the investigation in one workspace.
This product includes GeoLite2 data created by MaxMind, available at maxmind.com.